Schedule an Appointment Pay Bill View My Results

Test Directory

Test Directory Chromosome Analysis, Amniotic Fluid

Chromosome Analysis, Amniotic Fluid

Test Summary

This test will detect chromosome abnormalities of the fetus including numerical, structural, and mosaic abnormalities. Chromosome analysis will also reveal fetal sex and sex chromosome abnormalities. Indications for prenatal chromosome analysis may include advanced maternal age, abnormal fetal ultrasound, abnormal maternal serum screen, abnormal cell-free DNA results, history of a previous child with a chromosome abnormality, or a parent who carries a balanced chromosomal rearrangement or has another chromosome abnormality.

Aliases

Specimen Collection

Special Instructions

N/A

Preferred Specimen

20 mL amniotic fluid collected in a sterile, screw-cap container

Minimum Volume

5 mL

Instructions

30 mL is preferred if other testing, e.g. microarray, FISH is ordered.

Ship at room temperature. Do not Freeze.
Send all tubes to lab (supernatant for AFP will be split by cytogenetics lab).

Please contact the laboratory Genetic Counselor at 1-866-GENEINFO (1-866-436-3463) with any questions.

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

Room temperature: Preferred
Refrigerated: Acceptable
Frozen: Unacceptable
Specimen viability decreases during transit. Send specimen to testing lab for viability determination. Do not freeze. Do not reject.

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

N/A

Order Code

CHRMAM

EPIC (Premier) Code

LAB494

Includes

N/A

CPT Code

88267
88280

Billing Code

670957
670958

CPT Statement

Methodology

Culture • Karyotype • Microscopy

FDA Status

FDA Approved

Physician Attestation of Informed Consent

This germline genetic test requires physician attestation that patient consent has been received if ordering medical facility is located in AK, DE, FL, GA, IA, MA, MN, NV, NJ, NY, OR, SD or VT or test is performed in MA.

Testing Laboratory

Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675

Department

Reference Testing

Reference Range

See Laboratory Report

Setup Schedule / Expected Turnaround Time

Daily; Report available: 9 - 12 days