Maternal Cell Contamination Study

Test Code

CPT Codes

Preferred Specimen
5 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume
3 mL

This code is only to be used when ordering code 15816, Sickle Cell Anemia, DNA Probe Analysis, Fetus, referred to Quest Diagnostics Nichols Institute, San Juan Capistrano. This test must be performed in order to rule out maternal contamination of the fetal sample.

This test is run in conjunction with a fetal specimen (Amniotic fluid or CVS). The assay cannot be run until fetal cultures are ready. The TAT is therefore dependent on the TAT of the fetal DNA test on the same patient.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 8 days
Refrigerated: 8 days
Frozen: unacceptable

Fragment Analysis by Capillary Electrophoresis • Multiplex PCR

FDA Status
This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.

Setup Schedule
See instructions

Reference Range
See Laboratory Report

Clinical Significance
Maternal Cell Contamination Study, STR Analysis, provides assurance that test results from fetal specimens are not influenced by contaminating maternal material. This test also allows for establishing the proper maternal-fetal relationship between specimens by using sophisticated analysis of 15 highly polymorphic STR loci.

Performing Laboratory
Quest Diagnostics Nichols Inst San Juan Capistrano
33608 Ortega Highway
San Juan Capistrano, CA 92675

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.