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| Test code: | 884 |
| Type of disorder: | Obesity |
| Disease(s) tested for: | Early-onset Obesity |
| Genes Included: | LEPR, MC4R, |
| Tests included: | Early Onset Obesity (LEPR) DNA Sequencing Test Early Onset Obesity (MC4R) DNA Sequencing Test |
| Informed Consent Required: | This test requires physician attestation that patient consent has been received |
| Clinical Significance: | Detects mutations in the LEPR and MC4R genes Typical Presentation: Severe obesity in children, in absence of developmental delay and/or dysmorphic features. Family history of severe early-onset obesity. |
| 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: | 81403(1), 81406(1) |
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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