| Test code: | 748 |
| Type of disorder: | Monogenic Hypertension |
| Disease(s) tested for: | Pseudohypoaldosteronism Type 1 |
| Genes Included: | SCNN1A, SCNN1B, SCNN1G, |
| Tests included: | SCNN1A DNA Sequencing Test SCNN1B DNA Sequencing Test SCNN1G DNA Sequencing Test |
| Informed Consent Required: | This test requires physician attestation that patient consent has been received |
| Clinical Significance: | Detects mutations in the SCNN1A, SCNN1B and SCNN1G genes Typical Presentation: Presents in infancy with sodium wasting, hypovolemia, and hyperkalemia Indications for testing: Sodium wasting, hypovolemia, and hyperkalemia |
| Methodology: | Sanger Sequencing |
| Reference Range: | No sequence variation detected |
The CPT codes provided 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 payer being billed.
| CPT: | 81406(3) |
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
| Specimen Type: | Whole blood |
| Specimen Stability: | Room temperature: 10 days, Refrigerated: 10 days, Frozen: Unacceptable, |
| Specimen Requirements: | 8 mL (6 mL minimum) whole blood collected in two (lavender-top) EDTA tubes. Pediatric (0-3 years): 2 mL (1 mL minimum) |
| Instructions: | Higher blood volumes ensure adequate DNA quantity, which varies with WBC, specimen condition, and need for confirmatory testing. Patients, 0-3 years have higher WBC, yielding more DNA per mL of blood |
| Transport Temperature: | Room temperature |
| Set-up/Analytic Time: | 14-28 days |
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