May 10 2011

Cord Blood and Delayed Clamping

Posted by Martin Smithmyer

Delayed clamping occurs when the clamping and cutting of the umbilical cord is delayed for a specified period of time (usually one minute) after birth. It is done so that the baby can get more of the highly beneficial cord blood.

What is the theory behind delayed clamping?

The theory behind delayed clamping is that adequate umbilical stem cells are good, so more must be better. It also theorizes that cord blood banking thus takes valuable blood cells from the baby. As of now, however, there is no scientific evidence indicating that early cord clamping leads to a deficit of stem cells in the neonate or that delayed cord clamping has any impact on any neonatal system dependent on stem cells. The purported benefits are all entirely theoretical. In fact, some doctors suggest that “over inflating” the baby with cord blood by delaying the cord clamping too long could have serious detrimental effects on the baby. If you are concerned about this, ask your doctor.

Delayed Clamping and Cord Blood Banking

Delayed clamping, however, should not interfere with the cord blood collection. Usually, the blood does not clot within the blood vessels of the placenta for at least 10 to 15 minutes. This means there should be plenty of time to perform the collection.

Americord Registry has pioneered a new cell harvest technique, called Cord Blood 2.0. This increases the number of stem cells available from each birth. Americord is the only family cord blood bank headquartered in New York City.  Americord includes 20 years if storage and all fees in its’ cord blood banking cost.


For more information on which cord blood banks give you the best and most affordable banking, see our comparison of cord blood banks. Please contact us with any further questions you may have about both cord blood banking.


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