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Published on: April 16, 2013
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Postnatal Cord Blood Sampling: Clinical Report
David A Kaufman1, Ashley M Lucke2, James J Cummings3
1Department of Pediatrics, Division of Neonatology, University of Virginia School of Medicine, Charlottesville, Virginia.
Pediatrics
|May 26, 2025
Summary
Postnatal umbilical cord blood sampling (PCBS) offers a safe alternative to neonatal phlebotomy, reducing infant blood loss and pain. This method supports various neonatal tests and may decrease the need for transfusions and intracranial hemorrhage risk.
Area of Science:
- Neonatal Medicine
- Pediatric Hematology
- Clinical Pathology
Background:
- Umbilical cord blood after placental separation is of infant origin and suitable for neonatal testing.
- Neonatal phlebotomy is often indicated for NICU admissions, sepsis evaluations, and congenital anomalies.
- Traditional neonatal phlebotomy can cause significant blood loss and pain during a critical transition period.
Purpose of the Study:
- To review the evidence, safety, and methods for postnatal umbilical cord blood sampling (PCBS).
- To highlight PCBS as an alternative to direct neonatal phlebotomy.
- To discuss the broad applicability and benefits of PCBS in neonates.
Main Methods:
- Review of existing literature on postnatal umbilical cord blood sampling.
- Analysis of indications for neonatal blood sampling.
- Description of PCBS collection techniques and applications.
Main Results:
- PCBS avoids neonatal blood loss and phlebotomy pain, especially beneficial for very low birth weight infants.
- PCBS demonstrated benefits including stable blood pressure, reduced need for vasopressors and transfusions, and potentially lower intracranial hemorrhage risk.
- PCBS is suitable for term and preterm infants and can be used for a wide range of tests, including complete blood counts, blood cultures, genetic testing, and newborn screening.
Conclusions:
- Postnatal umbilical cord blood sampling is a safe and effective method for neonatal blood collection.
- PCBS offers significant advantages over direct neonatal phlebotomy, improving infant outcomes and reducing iatrogenic stress.
- The versatility of PCBS supports its use in routine testing, research, and cord blood banking, even after delayed cord clamping or cord milking.
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