Clinical Resources for Clinicians · For clinicians

Outpatient Anemia Protocol for OB Practices: A Template

By the Find Her Doctor editorial team · Updated November 1, 2026 · 6 min read

A good outpatient anemia protocol turns guideline thresholds into automatic actions: what to test and when, which result triggers oral iron, when to recheck, when to escalate to IV iron, and when to refer. Its most important element isn't a threshold at all. It's a named person who tracks every abnormal result until it's resolved. Below is a template to adapt and have signed off by your practice's clinical leadership.

Why a written protocol

Most missed iron deficiency in obstetric practice is a systems problem, not a knowledge problem. Ferritin isn't ordered. A low result sits in an inbox. Oral iron gets started with no recheck. The IV iron referral goes out at 36 weeks. Everyone on the team knows the guidance; the protocol's job is to make each step the default instead of a decision someone has to remember.

Section 1: Screening

A decision your practice has to make: universal versus risk-based first-visit ferritin. Risk factors are common enough that many practices simply go universal; it's one less judgment call at a busy intake visit. See iron deficiency screening in pregnancy.

Section 2: Interpretation rules

Write the thresholds into the protocol so every staff member applies the same cutoffs, including the MA reviewing results at 4:45 on a Friday.

Define severity tiers (what counts as "severe") locally with your hematology partner, and add an urgent-callback rule for any value that needs same-day clinician review.

One pattern worth naming: the lab's printed reference range for ferritin is often far below 30 µg/L, so a ferritin of 18 may come back unflagged. Your protocol threshold, not the lab flag, should drive action.

Section 3: Standing orders for oral iron

For iron deficiency with or without anemia, with clinician approval:

• Product: a standard ferrous salt at a moderate dose of elemental iron, once daily or on alternate days. Avoid multiple daily doses, which add side effects without proportionally improving absorption.
• Counseling script: take on an empty stomach or with a light snack; take with vitamin C; separate from calcium, dairy, antacids, tea and coffee by at least 2 hours; separate from levothyroxine by 4 hours; expect dark stools; call about constipation or nausea rather than stopping.
• Constipation plan: offer a stool softener or osmotic laxative up front. In practice, GI side effects are the main reason patients quietly stop, and they rarely volunteer it.
• Patient handout: in the languages your patients actually speak. In much of New York City that means at least Spanish and Chinese, and often Russian, Bengali, Haitian Creole or Yiddish depending on the practice.

Section 4: Recheck schedule

• 2–4 weeks after starting: CBC, plus reticulocytes if available. Expect a measurable rise.
• 24–28 weeks: CBC ± ferritin.
• Third trimester: CBC by 34 weeks for anyone treated earlier.
• After hemoglobin normalizes: continue oral iron for about 3 months and through at least 6 weeks postpartum, per BSH.

Book the recheck before the patient leaves. Don't rely on the next routine visit if it's more than 4 weeks away.

Section 5: IV iron triggers

Escalate to IV iron (second trimester onward, or postpartum) when any of these apply:

• No meaningful hemoglobin rise after 2–4 weeks of confirmed adherence
• Intolerance despite dose and schedule changes
• Known malabsorption: bariatric surgery, IBD, celiac disease
• Iron deficiency anemia diagnosed at or after about 34 weeks
• Moderate to severe anemia requiring rapid correction
• Patient declines blood products
• Postpartum anemia after PPH, or moderate to severe postpartum anemia

Workflow: clinician signs the order → staff send the referral with documentation (labs, oral trial dates, reason for failure) → staff confirm the infusion date → staff call the patient → the protocol owner tracks it until the infusion is done. Documentation details are in IV iron prior authorization.

Section 6: Hematology referral criteria

Refer, or curbside a hematologist, for:

• Anemia not explained by iron deficiency, or not responding to IV iron
• Abnormal white cell or platelet counts, or an abnormal smear
• Suspected or confirmed hemoglobinopathy, including sickle cell disease
• Platelets persistently below about 100 × 10⁹/L, or any thrombocytopenia with bleeding
• Personal or family history suggesting a bleeding disorder, or abnormal coagulation tests
• Thrombophilia or anticoagulation questions
• Patients who decline blood products

Fuller list: our hematology referral checklist.

Section 7: Ownership and tracking

This is the section that makes the rest work.

• Name an anemia coordinator, usually a nurse, who reviews every abnormal CBC and ferritin weekly.
• Keep a registry, an EHR list or a simple tracker, with diagnosis date, gestational age, treatment, recheck date, response and IV iron status.
• Set escalation rules: if no response is documented within 4 weeks of starting treatment, the chart routes to the clinician.
• Close the postpartum loop: the inpatient discharge hemoglobin routes to the outpatient coordinator. This handoff is the one most often lost, particularly when patients deliver at a hospital outside your usual network.

Section 8: Gynecology extension

Apply the same logic to non-pregnant patients with heavy menstrual bleeding:

• CBC and ferritin for every patient with HMB
• Screen for bleeding disorders per ACOG Committee Opinions 557 and 785; see the HMB bleeding-disorder workup
• Treat iron deficiency even without anemia, especially in adolescents; see iron deficiency without anemia in adolescents

Auditing the protocol

Review quarterly:

• Share of first-visit labs that include ferritin
• Share of iron-deficient patients with a documented recheck within 4 weeks
• Median days from IV iron order to infusion
• Share of patients anemic at admission for delivery
• Transfusions in patients with antenatal anemia

These show where patients fall through. The order-to-infusion interval is often the first one worth fixing.

Adapting the template

No template fits every practice. Midwifery-led practices may route IV iron decisions through a collaborating physician. Multi-site groups may need a coordinator per site plus a central registry. Practices with many patients on Medicaid managed care should build prior authorization into the IV iron workflow from day one, because each plan's process differs. Revisit thresholds whenever major guidance changes, such as ACOG updates or new hematology guidance on ferritin cutoffs.

Referral partnership in New York

A protocol is only as fast as its IV iron and hematology steps. Premier Hematology & Oncology, which sponsors our professional resources, works with OB practices on referral pathways, IV iron infusions and co-management that can be written directly into a protocol like this one. See our hematology partners page to set one up.

Frequently asked questions

Sources

• ASH — 2026 Guidelines for Diagnosis of Iron Deficiency (Blood Advances)
• ACOG — Anemia in Pregnancy (Practice Bulletin No. 233)
• British Society for Haematology — UK guidelines on the management of iron deficiency in pregnancy (2020)
• WHO — Guideline on haemoglobin cutoffs to define anaemia in individuals and populations (2024)
• ACOG — Optimizing Postpartum Care (Committee Opinion No. 736)
• ACOG — Management of Acute Abnormal Uterine Bleeding in Nonpregnant Reproductive-Aged Women (Committee Opinion No. 557)

This article is for general education and is not medical advice. It does not replace an evaluation by a licensed clinician who knows your history. If you think you have a medical emergency, call 911.