Isoniazid, Level

Test Code
901266


CPT Codes
80299<br>This test is not available for New York patient testing

Preferred Specimen
2 mL serum collected in a red-top tube (no gel)


Minimum Volume
0.5 mL


Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube


Instructions
Ship samples to received Monday through Friday. Do not ship on Friday or Saturday.

Collect blood in an 8-10 mL plain red-top tube. An 8-10 mL green-top tube is also acceptable for this assay, but not preferred.

Separate serum (or plasma) from cells immediately by centrifuge and aliquot into a labeled polypropylene or similar plastic tube. Use a separate tube for each test ordered. Allow room for expansion of sample. Include drug dose amount, frequency, method, and date, and time of last dose prior to draw.


Transport Container
Polypropylene or similar plastic tube


Transport Temperature
Frozen


Specimen Stability
Room temperature: 1 hour
Refrigerated: Unacceptable
Frozen: 30 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Serum separator tube (SST)


Methodology
High Performance Liquid chromatography (HPLC)

FDA Status
The performance characteristics for this test have been validated by Advanced Diagnostics Laboratories at National Jewish Health. It has not been cleared or approved by the US Food and Drug Administration.
The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. This laboratory is certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA 88) as qualified to perform high complexity clinical laboratory testing.

Setup Schedule
Set up: Mon-Fri; Report available: 4-7 days


Reference Range
See Laboratory Report


Performing Laboratory
National Jewish Medical and Research Center
1400 Jackson Street
Denver, CO 80206



The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.