Clinical and Molecular Cytogenetics Laboratory

University of Texas Health Science Center | Department of Pathology, MSC-7750 | 7703 Floyd Curl Drive | San Antonio, TX 78229-3900


Test Name

Chromosome Analysis Amniotic Fluid

Test Overview

CPT Code(s)

88235, 88267, 88280, 88291



Culture / Microscopy / Karyotype


Specimen Requirements

Container: Two 15 ml sterile leak-proof conical tubes (discard 1st milliliter to avoid maternal cell contamination)

Optimal Quantity: 20-25 ml

Minimum Quantity: 10 ml

Storage: Room Temperature

Stability at Room Temperature: 8 hours, then refrigerate

Transportation: Avoid freezing or heating over 35OC


Turnaround Time

Final report in 7-10 days for 90% cases