Rh D mutation analysis identifies pregnancies at risk for Rh alloimmunization. Indications for Rh D testing include: pregnancies in which the woman is Rh D-negative and the partner is known to be Rh D-positive or women with a history of fetal loss due to Rh alloimmunization.
CPT Codes:
83891(1), 83894(2), 83898(1), 83900(1), 83912(1)
Specimen Requirements:
Prenatal:
-
Please Note: Parental blood specimens {10 ml whole blood in ACD-A (yellow-top) or EDTA (lavender-top) tube} are required for analysis of Rh genotype in conjunction with prenatal analysis. Call a laboratory genetic coordinator prior to obtaining any specimens if routine chromosome analysis is not requested.
- Discard first 2 ml; then 10 ml amniotic fluid in 15 ml orange-top polypropylene tube, 10-15 mg chorionic villi in laboratory-provided screw-top tubes with sterile transport medium or one T-25 flask of confluent fetal cells.
Turnaround Time:
7-10 days
Client Services:
Reproductive/Genetics
800-848-4436
Specimen Services/Pickup:
877-246-1226