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Entrapment Neuropathy Evaluation
Test Code93398
CPT Codes
81324, 81325, 81404<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><strong>⁠⁠⁠⁠⁠⁠⁠Restricted Use. This code is available for Clients 51613, 58536 57452 54279 and 4074 ONLY.</strong>
Preferred Specimen
8 mL whole blood collected in two EDTA (lavender-top) tubes
Pediatric (0-3 Years): 2 mL
Pediatric (0-3 Years): 2 mL
Minimum Volume
6 mL • Pediatric: 1 mL
Instructions
Please label each specimen with two forms of patient identification. These forms of identification must also appear on the requisition form.
Note: Higher blood volumes ensure adequate DNA quantity, which varies with WBC, specimen condition, and need for confirmatory testing. Patients, 0-3 years may have higher WBC, yielding more DNA per mL of blood.
Note: Higher blood volumes ensure adequate DNA quantity, which varies with WBC, specimen condition, and need for confirmatory testing. Patients, 0-3 years may have higher WBC, yielding more DNA per mL of blood.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Methodology
Sanger Sequencing • Multiplex Ligation-dependent Probe Amplification (MLPA) • Next Generation Sequencing
Setup Schedule
Report available: 14-28 days
Clinical Significance
Detects duplications, deletions, and sequence variants in
the PMP22 gene and sequence variants in Transthyretin gene.
the PMP22 gene and sequence variants in Transthyretin gene.
