Is it better to collect cord blood before or after delivery of the placenta?

Answer: This is a close call.

References:

• Solves P, et al. 2003; Bone Marrow Transplant. 2003 Feb;31(4):269-73. In a sample of 569 vaginal deliveries, a larger volume and a higher number of Stem Cells were harvested from the in utero collection group.
• Lasky, LC, et al. 2002; Transfusion Oct;42(10):1261-7 They say that, in terms of sample volume and cell count, there is “no advantage of either method”.
• Surbek, DV, etal. 2000; Am J Obstet Gynecol Jul;183(1):218-21 They prefer in utero collection for cesarean delivery