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Test Directory

Test Directory Cytochrome P450 2C9 Genotype

Cytochrome P450 2C9 Genotype

Test Summary

This assay will detect the two major CYP2C9 alleles associated with poor drug metabolism and resultant drug toxicity or poor therapeutic response and may be used to obtain improved safety and efficacy data from clinical trials and to avoid adverse drug responses in clinical trial participants.

Aliases

Specimen Collection

Special Instructions

N/A

Preferred Specimen

5 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume

3 mL

Instructions

N/A

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 8 days
Refrigerated: 8 days
Frozen: Unacceptable

Limitations

N/A

Other Acceptable Specimens

Whole blood collected in: ACD solution B (yellow-top) tube or sodium heparin (green-top) tube

Unacceptable Specimens

N/A

Order Code

P450GT

EPIC (Premier) Code

LAB6323

Includes

N/A

CPT Code

81227

Billing Code

670850

CPT Statement

Methodology

Polymerase Chain Reaction (PCR) • Single Nucleotide Primer Extension

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675

Department

Reference Testing

Reference Range

See Laboratory Report

Setup Schedule / Expected Turnaround Time

Thursday; Report available: 7 - 14 days