1 - 2 weeks
GENERIC CYTOGENETICS TEST
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Detection of in utero chromosome abnormalities.
Interpretive report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Schedule only through Perinatal counselors 763-4264 for genetic counseling that should begin at 8 - 12 weeks of pregnancy. Discard first mL drawn and change syringe. If specimen is bloody, call the laboratory at 763-5805 to arrange for a STAT courier pick-up. Please complete a MiChart test request and submit it with the specimen. A Cytogenetics Laboratory Requisition is available online at: http://www.pathology.med.umich.edu/handbook/Tables/UM_REQ_CYTOGENETICS….
Optimal timing for specimen collection is during 16 to 18 weeks of gestation. Draw 20 mL to 25 mL of amniotic fluid in a sterile syringe, discarding the first 2 mL of amniotic fluid. Remove the needle and transfer the specimen to 2 screw-capped, sterile 15-mL clear, conical centrifuge tubes. Send specimen refrigerated. Specimen cannot be frozen.