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TCF1 (MODY3) DNA Sequencing and Deletion Test

Test Code
901135


CPT Codes
81405, 81479<br><strong>CPT coding may differ dependent on payer rules which may impact prior authorization testing.</strong><br><strong>Please direct any questions regarding CPT coding to the payer being billed.</strong><br><br>Restricted Client Code

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


Minimum Volume
2 mL


Instructions
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.

Ship overnight at room temperature (specimen arrival must be less than 24 hours after collection); ship Monday through Thursday only.

Note: Hemolysis may compromise DNA recovery and integrity after 48 hours


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable


Methodology
DNA Sequencing • Multiplex-Ligation Probe Amplification (MLPA)

Setup Schedule
Set up: Varies; Report available: 28 days


Reference Range
No sequence variation or deletion detected


Clinical Significance
Detects deletions and mutations in the HNF1A gene




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.