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TCF1 (MODY3) DNA Sequencing and Deletion Test
Test Code901135
CPT Codes
81405, 81479<br>Restricted Client Code
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.
Preferred Specimen
10 mL whole blood aliquot collected in an EDTA (lavender-top) tube
Minimum Volume
2 mL
Instructions
Informed consent is required.
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
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
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
