Twin Zygosity

Test Code

13719

CPT Codes
81265

Preferred Specimen

2 mL whole blood collected in EDTA (lavender-top) tube, K2EDTA (pink-top) tube, or ACD (yellow-top) tube from each twin

Minimum Volume

1 mL

Instructions

Results from both twins will be compared and reported; therefore, a test must be ordered for and sample submitted from each individual.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 7 days
Refrigerated: 30 days
Frozen: Unacceptable

Methodology
Polyerase Chain Reaction/Fragment Analysis

FDA Status
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the U.S. Food and Drug Administration. This test was performed in a CLIA-certified laboratory and is intended for clinical purposes.

Setup Schedule

Set up: Varies; Report available: 5-10 days

Reference Range

See Laboratory Report

Clinical Significance

Use to determine zygosity.

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.