Today we’re diving into a lab order that almost every ob-gyn, midwife, and labor-and-delivery nurse were traditionally trained to do: the routine Postpartum Day 1 Hemoglobin and hematocrit. For decades, checking a patient’s H&H after delivery was automatic. Didn’t matter if it was a smooth, uncomplicated vaginal birth with minimal blood loss or a complex emergency C-section- come 6:00 AM the next morning, someone was drawing blood. Historically, the logic felt airtight: First, visual estimation of blood loss (the EBL) during delivery is notoriously inaccurate; clinicians often underestimate heavy bleeding by as much as 30 to 50 percent. Second, severe postpartum anemia can be sneaky. A patient might look fine lying in bed, but an undetected crash in hemoglobin can lead to severe fatigue, impaired bonding, delayed recovery, or even delayed postpartum hemorrhage complications. And third, early detection meant early intervention- giving iron or transfusing blood before the patient got discharged home. It was standard, it was defensive, and it felt safe. But here is the million-dollar question: Is a blanket, universal Postpartum H&H actually evidence-based in modern obstetric care? Or are we just poking healthy, asymptomatic patients, driving up healthcare costs, and treating lab numbers instead of the clinical patient? Today we will be looking at what the major guidelines, including ACOG, actually say, and why target-based screening has long replaced universal testing. Let’s get into it!
1. Ruiz de Viñaspre-Hernández R, Gea-Caballero V, Juárez-Vela R, Iruzubieta-Barragán FJ.The definition, screening, and treatment of postpartum anemia: A systematic review of guidelines. Birth. 2021.
2. Anemia in Pregnancy: ACOG Practice Bulletin, Number 233.Obstetrics and Gynecology. 2021. Committee on Practice Bulletins—Obstetric
3. Muñoz M, et al. Patient blood management in obstetrics: management of anaemia and haematinic deficiencies in pregnancy and in the post-partum period: NATA consensus statement. Transfus Med. 2018 Feb;28(1):22-39
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