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Chromosome Analysis, Prenatal Cordocentesis and Fetal Hemoglobin
- Percutaneous Umbilical Cord Sampling (PUBS)
Rapid analysis of fetal chromosomes, used most frequently following the determination of fetal amniocyte mosaicism
Standard G-banded karyotyping and isoelectric focusing of hemoglobin to confirm fetal derivation of the sample
1 to 3 mL
Maintain specimen at room temperature.
Causes for Rejection
Specimen frozen; clotted specimen; specimen determined to be maternal in origin
Medical indication for procedure and the patient's name and age should be included on the request form.