What is fetal-scalp blood sampling?Fetal-scalp blood sampling is a quick test your health care provider can use to check if your baby is getting enough oxygen during labor.
During labor, your cervix dilates (opens) to let your baby out. Your cervix is the opening to the uterus that sits at the top of the vagina. In order to have fetal-scalp blood sampling, your cervix must be dilated enough that your provider can reach your baby’s head.
The test may remind you of a pelvic exam. It takes about 5 minutes. You lie on your back with your feet in stirrups. Your provider places a plastic cone in the vagina that fits up against the baby’s head. Your provider pricks your baby’s scalp and takes a small amount of blood. The blood is tested, and results are ready in a few minutes.
You may feel some pressure during the test, but it shouldn’t hurt. Your baby may have some bruising or bleeding at the spot where he’s pricked.
If you have an infection, like HIV or hepatitis C, your provider may not recommend fetal blood sampling. This is because you can pass these infections to your baby through the spot where he’s pricked.