Part of the Maintenance Hemodialysis mastery module. This page covers hemoglobin targets, erythropoiesis-stimulating agents (ESAs), and hyporesponsiveness. Iron, HIF-PH inhibitors, and transfusion are on the companion page, Anemia: iron, HIF-PH inhibitors, and transfusion.
Bottom Line
The hemoglobin lesson is the most expensive lesson in nephrology. It took two decades of trials to learn that a normal number is not a healthy patient.
- KDIGO rewrote the anemia guideline in January 2026 — its first full update since 2012, summarized for internists in Annals in September 2026 1,2,3. For dialysis it keeps ESA initiation at a hemoglobin (Hb) of 9.0–10.0 g/dL or below (2D), makes the ceiling a recommendation — target below 11.5 g/dL (1D) — and prefers an ESA over a HIF-PH inhibitor as first-line therapy (2D) 1.
- The US label is stricter than the guideline. Epoetin labeling says to reduce or interrupt the dose when Hb approaches or exceeds 11 g/dL in dialysis patients 4. A unit protocol has to pick one number and say so.
- The hemodialysis target trials are the Normal Hematocrit Trial and Parfrey 2005 5,6. CHOIR, CREATE, and TREAT — the trials most often quoted — enrolled non-dialysis CKD 7,8,9. The direction of harm is the same; the population is not.
- ESA hyporesponsiveness is a prognosis, not a dosing problem. Poor responders die more, whichever drug they receive 10,11,12. Find the cause — iron, inflammation, access infection, underdialysis, hyperparathyroidism, blood loss — and avoid escalating beyond double the stable dose 1.
- KDIGO 2026 allows a 3–4-month HIF-PHI trial for persistent hyporesponsiveness when there is a reason to raise Hb (practice points 3.7.2–3.7.4). The caveat: the truly hyporesponsive and inflamed patients were excluded from the HIF-PHI trials 1,13.
What Changed: KDIGO 2012 to KDIGO 2026
The 2026 guideline supersedes the 2012 document. For hemodialysis, the changes that matter most are below; the 2012 column also reflects the KDOQI US commentary on that guideline 1,13,14,15.
| Domain | KDIGO 2012 | KDIGO 2026 |
|---|---|---|
| ESA initiation, dialysis | Start when Hb 9.0–10.0 g/dL (2B) | Hb ≤9.0–10.0 g/dL (Rec 3.2.1, 2D) |
| ESA ceiling | Generally not above 11.5 (2C); never intentionally above 13 (1A) | Target below 11.5 g/dL (Rec 3.3.1, 1D) |
| Hb monitoring, HD maintenance | At least monthly (not graded) | At least every 3 months (PP 3.4.3.3) — a looser floor |
| First-line agent | ESA (HIF-PHIs did not exist) | ESA rather than HIF-PHI (Rec 3.1.1, 2D) |
| Hyporesponsiveness | Initial and acquired definitions | Same definitions; a 3–4-month HIF-PHI trial may be considered (PP 3.7.2–3.7.4) |
| Iron initiation, HD | Trial of IV iron if TSAT ≤30% and ferritin ≤500 ng/mL (2C) | Initiate if ferritin ≤500 ng/mL and TSAT ≤30% (Rec 2.1, 2D) |
| Iron ceiling | Avoid if ferritin consistently >500 (not graded) | Reasonable to withhold routine iron if ferritin >700 ng/mL or TSAT ≥40% (PP 2.2) |
| Iron-deficiency terms | “Absolute” and “functional” | “Systemic iron deficiency” and “iron-restricted erythropoiesis” |
Rec = graded recommendation; PP = practice point (ungraded). In KDIGO notation, 1 is a recommendation and 2 a suggestion; the letter grades the certainty of evidence, from A (high) to D (very low). Both headline hemoglobin numbers on this page rest on D-grade evidence.
1. Why Hemodialysis Patients Are Anemic
Five mechanisms stack. Only one of them is erythropoietin.
Relative erythropoietin deficiency. The anemia of CKD is typically normocytic and normochromic and is driven primarily by a relative reduction in renal erythropoietin (EPO) synthesis, reflecting both lost kidney mass and a disrupted renal oxygen-sensing mechanism 13. “Relative” is the key word: the EPO level is inappropriately low for the degree of anemia, not necessarily low in absolute terms.
Hepcidin and inflammation. Inflammation drives hepatic hepcidin, which downregulates the iron exporter ferroportin on enterocytes and macrophages. Dietary iron is not absorbed and stored iron is not released 13,16. The result is iron-restricted erythropoiesis: a normal or high ferritin with a low transferrin saturation (TSAT) 13,17. This is why oral iron works poorly in hemodialysis, why ferritin misleads, and why every infection, catheter, and failed graft shows up in the ESA dose.
Blood loss on dialysis. Every treatment costs blood — sampling, dialyzer and circuit residual, clotting, and post-needle bleeding. Sargent’s measured-loss studies, done with 1990s-era circuits, projected 2,516 to 5,126 mL of blood lost per year on conventional thrice-weekly hemodialysis 18. As derived arithmetic (not from the source): at Hb 11 g/dL a milliliter of blood carries roughly 0.38 mg of iron, so those losses equal roughly 0.9 to 1.9 g of iron per year. That is why nearly every hemodialysis patient on an ESA needs ongoing IV iron.
Shortened red-cell survival. In a small chromium-51 study of 22 patients, red-cell half-life was 14.5 days in thrice-weekly hemodialysis patients versus 23.5 days in healthy controls — unchanged from measurements made half a century earlier and not improved by nocturnal or short-daily hemodialysis 19.
Contributors that can be fixed. Underdialysis blunts the EPO response: raising the urea reduction ratio (URR) from 60.7% to 72% for six weeks raised hematocrit from 28.4% to 32.3% in an uncontrolled comparison 20. Severe secondary hyperparathyroidism with marrow fibrosis tripled the EPO dose needed (174 versus 56 U/kg three times weekly) 21. KDIGO 2026 lists the rest: nonadherence, hypothyroidism, infection or inflammation, dialysis-related and gastrointestinal blood loss, malnutrition, iron or B12/folate deficiency, marrow disorders including pure red-cell aplasia (PRCA), hemolysis, and malignancy 1.
2. Evaluation and Monitoring
Definition and the initial panel
KDIGO 2026 keeps the WHO definition of anemia — Hb below 13 g/dL in men and below 12 g/dL in women — and replaces the old initial panel with a CBC, reticulocyte count, ferritin, and TSAT (PP 1.2.1) 1. B12 and folate are no longer routine at diagnosis; they move to an expanded panel 1. The European Renal Best Practice (ERBP) commentary pushes back: test them in macrocytosis, cognitive impairment, malnutrition, diabetes, advanced age, and frailty — which describes much of a dialysis unit 13.
Hemoglobin beats hematocrit in dialysis because hematocrit swings more with plasma volume 13. Draw it pre-dialysis, on a consistent day of the week, so that the monthly number reflects biology rather than ultrafiltration.
How often
| What | KDIGO 2026 (hemodialysis) | FDA ESA or HIF-PHI label |
|---|---|---|
| Hb, stable on ESA | At least every 3 months (PP 3.4.3.3) | At least monthly 4 |
| Hb after ESA start or dose change | Every 2–4 weeks (PP 3.4.3.2) | At least weekly until stable 4 |
| Ferritin and TSAT | Every 1–3 months (PP 2.5); sooner after ESA or HIF-PHI start or increase, blood loss, hospitalization, or a large rise in ferritin or TSAT | Before and during treatment 4 |
| Hb on a HIF-PHI | 2–4 weeks after start or change, then every 4 weeks (PP 3.6.1) | Vadadustat: at start or adjustment, then monthly 22 |
Source for the KDIGO column: 1. KDIGO 2026’s “every 3 months” is a minimum, and it is looser than KDIGO 2012, which asked for Hb at least monthly during maintenance ESA therapy in dialysis 14. Nothing in the 2026 guideline argues against monthly testing, and the label asks for it.
Ferritin and TSAT: what they can and cannot tell you
- Ferritin is an acute-phase reactant. A ferritin above 800 ng/mL with a TSAT below 20% has become a common pattern in dialysis, and it usually means inflammation-locked iron rather than overload 17.
- TSAT reflects iron available to the marrow right now. It is sensitive to timing: it jumps after an IV iron dose, and most observational studies never report when TSAT was drawn relative to iron 13. Draw iron studies at the scheduled draw, before that session’s iron dose, and record the date of the last IV iron.
- A high ferritin does not mean no response to iron. DRIVE (RCT) randomized 134 anemic hemodialysis patients with ferritin 500–1,200 ng/mL and TSAT ≤25% on high-dose epoetin to ferric gluconate 125 mg for eight sessions or no iron. Hb rose 1.6 versus 1.1 g/dL at six weeks (P=0.028), and the benefit was the same above and below a ferritin of 800 23. Six weeks is short, and DRIVE says nothing about long-term safety at those ferritins.
Low TSAT plus low ferritin (below 200 ng/mL in hemodialysis) is systemic iron deficiency: give iron and look for blood loss. Low TSAT plus high ferritin is iron-restricted erythropoiesis: look for the inflammation — catheter, wound, old graft, occult infection — before assuming overload 1,13. A ferritin below 45 ng/mL, or microcytosis with an MCV below 80 fL, should prompt evaluation for gastrointestinal, urologic, or gynecologic blood loss (PP 1.2.3) 1.
Reticulocyte hemoglobin (CHr or Ret-He)
Reticulocyte hemoglobin measures iron delivered to red cells made in the last few days. In 164 hemodialysis patients, a CHr below 26 pg predicted a reticulocyte response to IV iron with sensitivity 100% and specificity 80%, outperforming ferritin and TSAT — in a 32-patient challenge subset (diagnostic cohort) 24. KDIGO 2026 did not adopt CHr; ERBP notes that other guidelines do 13. Where the laboratory reports it, reticulocyte hemoglobin is a reasonable tiebreaker when ferritin and TSAT disagree. Several cutoffs circulate, and none is guideline-endorsed in 2026.
When to look further
If iron indices do not explain the anemia, KDIGO’s expanded panel (PP 1.2.2) is a peripheral smear, haptoglobin, LDH, CRP, B12, folate, liver tests, serum protein electrophoresis with immunofixation and free light chains, urine Bence-Jones protein, TSH, PTH, and fecal occult blood 1. Add reticulocytes to separate a hypoproliferative marrow from hemolysis or bleeding 13.
3. Hemoglobin Targets and ESA Safety
The trials
| Trial | Population and design | Target arms | Primary result | Absolute effect and notes |
|---|---|---|---|---|
| Normal Hematocrit Trial (Besarab 1998) 5 | Hemodialysis, n=1,233, with CHF or ischemic heart disease; RCT | Hematocrit 42% vs 30% (epoetin) | Death or first MI: 202 vs 164 events; RR 1.3 (95% CI 0.9–1.9); halted early | 32.7% vs 26.7% — ARI 6.0%, NNH 17 over approximately 29 months. The report filed with the FDA showed RR 1.28 (1.06–1.56) 25 |
| Parfrey 2005 6 | Incident hemodialysis, n=596, no symptomatic heart disease; double-blind RCT | Hb 13.5–14.5 vs 9.5–11.5 | No difference in LV volume index (7.6% vs 8.3% change) | Surrogate endpoint. Higher arm: more headache and cerebrovascular events; vitality modestly better |
| CHOIR (Singh 2006) 7 | Non-dialysis CKD, n=1,432; open-label RCT | Hb 13.5 vs 11.3 (epoetin alfa) | Death, MI, CHF hospitalization, or stroke: HR 1.34 (1.03–1.74) | 17.5% vs 13.5% — ARI 4.0%, NNH 26 over a median 16 months; no quality-of-life gain |
| CREATE (Drüeke 2006) 8 | CKD G3–4, n=603; RCT | Hb 13–15 vs 10.5–11.5 (SC epoetin beta) | First CV event: HR 0.78 (0.53–1.14), P=0.20 | More patients reached dialysis in the high arm (127 vs 111, P=0.03); general health and physical function better |
| TREAT (Pfeffer 2009) 9 | Type 2 diabetes with non-dialysis CKD, n=4,038; placebo-controlled RCT | Darbepoetin to Hb approximately 13 vs placebo (rescue below 9) | Death or CV event HR 1.05 (0.94–1.17) | Stroke 5.0% vs 2.6%, HR 1.92 (1.38–2.68); ARI 2.4%, NNH 42. Transfusion 14.8% vs 24.5%: ARR 9.7%, NNT 11. Amgen-funded 10 |
Meta-analyses of RCTs. Across nine target trials (n=5,143), higher targets increased all-cause mortality (RR 1.17, 1.01–1.35) and access thrombosis (RR 1.34, 1.16–1.54) 26. Across 27 trials (n=10,452), higher targets increased stroke (RR 1.51), hypertension (RR 1.67), and access thrombosis (RR 1.33); mortality was not significantly higher (RR 1.09, 0.99–1.20) 27. The 2023 Cochrane network meta-analysis (117 trials, 25,237 participants) found that ESAs prevent transfusion versus placebo with low-to-moderate certainty and have uncertain effects on death 28.
Reading these trials critically
- Population. Three of the five famous trials enrolled non-dialysis CKD. The hemodialysis evidence is the Normal Hematocrit Trial (a harm signal in patients with heart disease) and Parfrey (no structural benefit, more cerebrovascular events). The direction agrees; the applicability is borrowed.
- The published Normal Hematocrit Trial understated the harm. Coyne compared the 1996 FDA-filed report with the 1998 NEJM paper: randomization to the higher target increased the primary endpoint and death with conventional 95% confidence intervals that excluded 1, and the reported physical-function benefit was a secondary association with achieved Hb, not a randomized effect 25. The normal-hematocrit arm also received more IV iron dextran and had lower dialysis adequacy 5.
- Target or dose? In CHOIR, the harm tracked a high epoetin dose and failure to reach target, not the achieved Hb itself 29. In TREAT, the lowest-quartile initial responders received higher doses and had more cardiovascular events (aHR 1.31) and deaths (aHR 1.41) 10. In the Normal Hematocrit Trial’s high arm, the least responsive quartile had 34% one-year mortality versus 14% in the most responsive 11. These are secondary analyses, confounded by the sickness that causes hyporesponse, but they are why “don’t escalate into resistance” became doctrine.
- Surrogate endpoints cut both ways. Hb is a surrogate. The trials that moved it furthest moved outcomes the wrong way.
The FDA position
The ESA boxed warning (epoetin alfa label, revised April 2024) states that ESAs increase the risk of death, myocardial infarction, stroke, venous thromboembolism, thrombosis of vascular access, and tumor progression; that targeting Hb above 11 g/dL increased serious cardiovascular risk; that no trial has identified a hemoglobin target, ESA dose, or dosing strategy that does not increase these risks; and that the lowest dose sufficient to reduce transfusion should be used 4. For adults on dialysis the label says: initiate when Hb is below 10 g/dL; reduce or interrupt when Hb approaches or exceeds 11 g/dL 4.
The guideline position
- Start: Hb 9.0–10.0 g/dL or below in dialysis (Rec 3.2.1, 2D) 1.
- Ceiling: target below 11.5 g/dL (Rec 3.3.1, 1D) — now a “we recommend” 1. The 2012 “never intentionally above 13 (1A)” statement no longer appears as a separate recommendation.
- Individualize within that range for symptoms, transfusion risk, and cardiovascular or cancer risk (PP 3.1.1, 3.3.1) 1.
- ERBP dissents at the floor. It would not let Hb routinely fall below 10 g/dL and endorses a 10–12 g/dL maintenance band 13. The KDOQI commentary on the 2012 guideline made a related point: there was little evidence that 11–11.5 is unsafe, and a lower bound of 9 may increase transfusion 15.
The US label and KDIGO 2026 disagree by half a gram. They are compatible if a protocol targets 10–11 g/dL and reduces or holds at 11 g/dL or above, which satisfies both. A protocol that targets up to 11.5 is guideline-concordant but outside the label’s dosing instructions 1,4. Which number a unit uses is a medical-director decision, and the protocol should state it.
What happened when the US lowered its targets
After the 2011 bundled payment and FDA label change, the share of US hemodialysis patients with Hb above 11 g/dL fell from 68% (2006) to 28% (2016), and the share below 9 g/dL rose from 5% to 9%. Adjusted MACE (aHR 0.95), stroke (0.83), and mortality (0.87) were lower after the policy change; MI was slightly higher (1.04) 30. Transfusions rose, but modestly — approximately a 7% relative increase in the monthly probability of transfusion 31. These are observational, interrupted-time-series data layered on secular improvements in dialysis care. They are consistent with the trials. They do not prove them.
4. Erythropoiesis-Stimulating Agents
The agents
| Agent | Half-life class | HD starting dose | HD adjustment | Evidence notes |
|---|---|---|---|---|
| Epoetin alfa (Epogen, Procrit); epoetin alfa-epbx (Retacrit) | Short | 50–100 U/kg three times weekly | +25 U/kg/dose if Hb rise is below 1.0 g/dL after 4 weeks; −10 to 25 U/kg/dose if the rise exceeds 2 g/dL in 4 weeks | Biosimilar equivalent to the originator IV in hemodialysis (RCT; Hb difference −0.12 g/dL; no PRCA) 32 |
| Darbepoetin alfa (Aranesp) | Intermediate | 0.45 µg/kg weekly or 0.75 µg/kg every 2 weeks | ±25% by the same Hb rules | Long-acting agents have similar potency IV and SC 13 |
| Methoxy PEG-epoetin beta (Mircera) | Long | 0.6 µg/kg every 2 weeks | ±30–50 µg/dose by the same Hb rules | MAXIMA (RCT): IV every 2 or 4 weeks non-inferior to epoetin for Hb (n=673) 33. Cardiovascular safety non-inferior to short-acting ESAs (RCT): MACE HR 1.03 (0.93–1.15), n=2,818 34 |
Starting doses and adjustments are from KDIGO 2026 Table 7 1. No ESA has shown an outcome advantage over another; the Cochrane network meta-analysis found comparative effects uncertain 28.
Route: IV or subcutaneous
In a VA trial (RCT) of 208 hemodialysis patients, subcutaneous epoetin maintained hematocrit with a 32% lower dose than IV 35. That saving applies to short-acting epoetin, not to darbepoetin or methoxy PEG-epoetin beta 13. KDIGO 2026 leaves the route to patient preference, local practice, and cost (PP 3.4.2.1) 1; the epoetin label recommends IV for hemodialysis 4. The historical cautionary tale is anti-EPO antibody pure red-cell aplasia, linked mainly to subcutaneous exposure — 13 patients with neutralizing antibodies in Casadevall’s original series 13,36. Giving the ESA IV into the circuit, as US units do, is reasonable.
Dose-adjustment rules: convergent across label and guideline
- Do not increase more often than every 4 weeks. Decreases may be more frequent 1,4.
- Rapid rise: Hb up more than 1 g/dL in any 2-week period → reduce by 25% or more (label) 4. KDIGO: a rise of more than 1.0 g/dL in 2–4 weeks after initiation → reduce by 25–50% (PP 3.4.1.2) 1.
- Slow rise: Hb up less than 1 g/dL after 4 weeks → increase by 25% 4.
- Falling Hb: “to avoid a rapid decline in Hb, consider reducing the ESA dose rather than holding ESA therapy, as long as the Hb does not exceed 11.5 g/dL” (PP 3.4.3.2) 1.
- Twelve weeks without response: further escalation is unlikely to help and may increase risk; evaluate other causes 4.
In an observational study of 281 hemodialysis patients, more than 90% cycled, averaging 3.1 excursions a year with a mean amplitude of 2.5 g/dL. The most common trigger of an upswing was an ESA dose increase (84%); of a downswing, a dose reduction (62%) or hold (15%) 37. Hold-and-restart protocols manufacture the roller coaster. Small, early reductions flatten it.
ESA hyporesponsiveness
Definition. KDIGO 2026 keeps its 2012 relative definitions (Table 10) 1:
- Initial: no Hb increase after the first month on appropriate weight-based dosing.
- Acquired: two dose increases of up to 50% beyond a previously stable dose are needed to hold Hb steady.
- Stop point: avoid repeated escalation beyond double the initial or previously stable dose.
Absolute-dose definitions also circulate — for example, KDOQI’s more than 450 IU/kg/week of IV epoetin or more than 300 IU/kg/week subcutaneously 1,13. Prevalence depends almost entirely on which definition is used 13.
Prognosis. In a secondary analysis of ASCEND-D (observational within a trial), baseline hyporesponsiveness — 12–20% of patients by three definitions — predicted MACE with an aHR of 1.32–1.36, with no interaction by randomized drug 12. The patient is the risk; the drug is not the rescue.
Causes and first moves.
| Cause | Clue | First move |
|---|---|---|
| Iron deficiency, systemic or restricted | TSAT below 20%, low CHr | IV iron course; recheck 1,23 |
| Inflammation or infection | High ferritin with low TSAT, rising CRP; catheter, wound, failed or old non-functioning AV graft | Find and treat the source 13,16 |
| Blood loss | Ferritin below 45, MCV below 80, positive stool guaiac, access bleeding | GI, urologic, or gynecologic evaluation 1 |
| Underdialysis | Low spKt/V or URR, access recirculation | Fix the access and the prescription 20 |
| Severe hyperparathyroidism | High PTH, marrow fibrosis | Treat the hyperparathyroidism 21 |
| B12 or folate deficiency | Macrocytosis, cognitive change | Replace 1,13 |
| Hemolysis | LDH up, haptoglobin down, abnormal smear | Smear; check water and dialysate 1 |
| Marrow disease (MDS, myeloma, PRCA) | Low reticulocytes, other cytopenias, M-protein | Hematology 1,36 |
| Hypothyroidism | TSH | Replace 1 |
| Drugs | ACE inhibitors or ARBs, proton pump inhibitors | Review; rarely worth stopping 13 |
| Nonadherence with home subcutaneous dosing | Missed doses | Supervised dosing 1 |
A stepwise workup. The sequence below condenses the causes above into an order of operations 1,13:
- Iron first. TSAT below 20% or a low CHr → IV iron. A ferritin below 45 or MCV below 80 → blood-loss evaluation.
- Then inflammation. A rising CRP or a plausible source → treat the catheter, wound, failed graft, or occult infection.
- Then the rest of the list. Check Kt/V, PTH, B12 and folate, TSH, LDH and haptoglobin, the smear, and protein electrophoresis with free light chains.
- Cause found → treat it and reassess in 4–8 weeks.
- No cause, no symptoms, low transfusion risk → accept a lower Hb and do not escalate beyond twice the stable dose.
- No cause, but symptomatic or at transfusion risk → a 3–4-month HIF-PHI trial or transfusion; stop the HIF-PHI if there is no response.
- Sudden severe anemia with reticulocytes near zero → suspect PRCA: stop the ESA and involve hematology.
Practice points 3.7.2–3.7.4 allow the 3–4-month HIF-PHI trial for persistent hyporesponsiveness when there is a reason to raise Hb, at the lowest effective dose, discontinued if it fails 1. ERBP supports the trial but notes that the truly hyporesponsive and inflamed patients were excluded from the HIF-PHI trials 13 — so the trial is a reasonable experiment, not an evidence-based rescue. For suspected ESA-related PRCA: stop the ESA, transfuse as needed, involve hematology, and consider a HIF-PHI (PP 3.7.6) 1. US availability and the HIF-PHI trial evidence are covered in the companion page.
ESA adverse effects that matter at the chair
- Hypertension. About 25% of dialysis patients needed new or increased antihypertensives after epoetin initiation; uncontrolled hypertension is a contraindication, and the label says to reduce or withhold the ESA if blood pressure becomes difficult to control 4. The pressor effect is partly independent of the rise in red-cell mass 38.
- Access thrombosis. Higher targets raise access thrombosis by approximately a third 26,27, and the label lists thrombosis of vascular access in the boxed warning 4.
- Stroke. TREAT: HR 1.92 9.
- Seizures, especially in the first months of therapy — monitor for premonitory symptoms 4.
- Cancer. The boxed warning covers tumor progression; KDIGO asks for shared decision-making about ESA use in active or prior cancer, especially when treatment aims at cure (PP 3.4.3.5) 1,4.
- Circuit clotting. Patients on an ESA may need more heparin during hemodialysis 4.
Evidence Gaps
- No modern hemodialysis trial of Hb targets within the 9.5–11.5 range. The 11.5 ceiling is a 1D recommendation built on older, mostly non-dialysis trials 1.
- Target versus dose. Is the harm from a high Hb, from high ESA exposure, or from the illness that causes hyporesponse? Only secondary analyses speak to it 10,11,29.
- Treating hyporesponsiveness. No RCT shows that any intervention in hyporesponders improves outcomes; anti-inflammatory approaches such as IL-6 blockade remain investigational 13.
- Sex differences. Women on dialysis need higher ESA doses; whether the same targets apply is unknown 13.
- Patient-reported outcomes. The fatigue and quality-of-life benefits of ESAs remain modest or uncertain 7,9.
At the Chair
The nurse runs the anemia protocol; the nephrologist owns the exceptions. The evidence on this page translates into a few chair-side habits: check the most recent Hb against the protocol band before each ESA dose; check blood pressure first, because uncontrolled hypertension is a contraindication 4; report a rise of more than 1 g/dL in 2 weeks, since the label calls for a dose cut of 25% or more 4; and report any hospitalization for stroke, MI, venous thromboembolism, or access thrombosis, because an ESA should then be reviewed by the physician 1.
Hold and report rules are on Nursing card N10 — Anemia protocol: ESA and iron hold/report rules.
References
Numbered for this page. Each reference was checked against its PubMed record or the primary document (guideline, FDA label, agency page) in September 2026.
- Kidney Disease: Improving Global Outcomes (KDIGO) Anemia Work Group. KDIGO 2026 Clinical Practice Guideline for the Management of Anemia in Chronic Kidney Disease (CKD). Kidney Int. 2026;109(1S):S1-S99. PMID: 41485812
- Babitt JL, Berns JS, Bozkurt B, et al. Executive Summary of the KDIGO 2026 Clinical Practice Guideline for the Management of Anemia in Chronic Kidney Disease (CKD). Kidney Int. 2026;109(1):44-56. PMID: 41485807
- Hedayati SS, Babitt JL, Berns JS, et al. Evaluation and Management of Anemia in Chronic Kidney Disease: Synopsis of the Kidney Disease: Improving Global Outcomes 2026 Clinical Practice Guideline. Ann Intern Med. 2026 Sep 15 (online ahead of print). PMID: 42735412
- Amgen Inc. EPOGEN (epoetin alfa) injection, prescribing information. Revised April 2024 (FDA Reference ID 5373326).
- Besarab A, Bolton WK, Browne JK, et al. The effects of normal as compared with low hematocrit values in patients with cardiac disease who are receiving hemodialysis and epoetin. N Engl J Med. 1998;339(9):584-590. PMID: 9718377
- Parfrey PS, Foley RN, Wittreich BH, et al. Double-blind comparison of full and partial anemia correction in incident hemodialysis patients without symptomatic heart disease. J Am Soc Nephrol. 2005;16(7):2180-2189. PMID: 15901766
- Singh AK, Szczech L, Tang KL, et al. Correction of anemia with epoetin alfa in chronic kidney disease (CHOIR). N Engl J Med. 2006;355(20):2085-2098. PMID: 17108343
- Drüeke TB, Locatelli F, Clyne N, et al. Normalization of hemoglobin level in patients with chronic kidney disease and anemia (CREATE). N Engl J Med. 2006;355(20):2071-2084. PMID: 17108342
- Pfeffer MA, Burdmann EA, Chen CY, et al. A trial of darbepoetin alfa in type 2 diabetes and chronic kidney disease (TREAT). N Engl J Med. 2009;361(21):2019-2032. PMID: 19880844
- Solomon SD, Uno H, Lewis EF, et al. Erythropoietic response and outcomes in kidney disease and type 2 diabetes. N Engl J Med. 2010;363(12):1146-1155. PMID: 20843249
- Kilpatrick RD, Critchlow CW, Fishbane S, et al. Greater epoetin alfa responsiveness is associated with improved survival in hemodialysis patients. Clin J Am Soc Nephrol. 2008;3(4):1077-1083. PMID: 18417744
- McCausland FR, et al. Association of different definitions of erythropoiesis-stimulating agent hyporesponsiveness with major adverse cardiovascular events: insights from ASCEND-D. Kidney360. 2025;6(9):1541-1548. PMID: 40333020
- Del Vecchio L, Cases A, Eisenga MF, et al. KDIGO 2026 Clinical Practice Guideline for Anemia in Chronic Kidney Disease (CKD): a commentary from the European Renal Best Practice (ERBP). Nephrol Dial Transplant. 2026;41(8):1554-1572. PMID: 41604211
- Kidney Disease: Improving Global Outcomes (KDIGO) Anemia Work Group. KDIGO Clinical Practice Guideline for Anemia in Chronic Kidney Disease. Kidney Int Suppl. 2012;2(4):279-335. (Not indexed in PubMed; recommendation statements verified against the KDIGO-hosted full text.)
- Kliger AS, Foley RN, Goldfarb DS, et al. KDOQI US commentary on the 2012 KDIGO Clinical Practice Guideline for Anemia in CKD. Am J Kidney Dis. 2013;62(5):849-859. PMID: 23891356
- Babitt JL, Lin HY. Molecular mechanisms of hepcidin regulation: implications for the anemia of CKD. Am J Kidney Dis. 2010;55(4):726-741. PMID: 20189278
- Wish JB. Assessing iron status: beyond serum ferritin and transferrin saturation. Clin J Am Soc Nephrol. 2006;1(Suppl 1):S4-S8. PMID: 17699374
- Sargent JA, Acchiardo SR. Iron requirements in hemodialysis. Blood Purif. 2004;22(1):112-123. PMID: 14732819
- Ly J, Marticorena R, Donnelly S. Red blood cell survival in chronic renal failure. Am J Kidney Dis. 2004;44(4):715-719. PMID: 15384023
- Ifudu O, Feldman J, Friedman EA. The intensity of hemodialysis and the response to erythropoietin in patients with end-stage renal disease. N Engl J Med. 1996;334(7):420-425. PMID: 8552143
- Rao DS, Shih MS, Mohini R. Effect of serum parathyroid hormone and bone marrow fibrosis on the response to erythropoietin in uremia. N Engl J Med. 1993;328(3):171-175. PMID: 8417383
- Akebia Therapeutics. VAFSEO (vadadustat) tablets, prescribing information with boxed warning, revised March 2024 (FDA Reference ID 5354686).
- Coyne DW, Kapoian T, Suki W, et al. Ferric gluconate is highly efficacious in anemic hemodialysis patients with high serum ferritin and low transferrin saturation: results of the Dialysis Patients' Response to IV Iron with Elevated Ferritin (DRIVE) Study. J Am Soc Nephrol. 2007;18(3):975-984. PMID: 17267740
- Fishbane S, Galgano C, Langley RC Jr, et al. Reticulocyte hemoglobin content in the evaluation of iron status of hemodialysis patients. Kidney Int. 1997;52(1):217-222. PMID: 9211366
- Coyne DW. The health-related quality of life was not improved by targeting higher hemoglobin in the Normal Hematocrit Trial. Kidney Int. 2012;82(2):235-241. PMID: 22437411
- Phrommintikul A, Haas SJ, Elsik M, Krum H. Mortality and target haemoglobin concentrations in anaemic patients with chronic kidney disease treated with erythropoietin: a meta-analysis. Lancet. 2007;369(9559):381-388. PMID: 17276778
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Also in the Maintenance Hemodialysis module
Part of the Maintenance Hemodialysis mastery module. Module index.
- M17b: Anemia: iron, HIF-PH inhibitors, and transfusion
- M18: Examining and cannulating the AVF/AVG
- M19: Catheter care, lock solutions, and bloodstream infection
- Module: Treating hypertension on dialysis
- Module: CKD-MBD monitoring on HD
- Module: Adequacy, nutrition, depression/cognition — and what quality metrics miss
- Clinical Mastery: Vascular access selection in older patients starting hemodialysis (ACCESS HD)
- Clinical Mastery: Enterococcal endocarditis in hemodialysis patients
- Complete white paper: Screening and health maintenance in maintenance hemodialysis — §8.1 anemia monitoring, updated to KDIGO 2026