ISONIAZID, SERUM/PLASMA

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate serum from cells, and send 1.0 mL serum (0.4 mL minimum) frozen in a screw-capped plastic vial. Collect specimen and ship to Warde Laboratory Sunday-Wednesday only.

Alternate Specimen
Plasma: Lavender EDTA

Rejection Criteria
SST, PST, sample received room temperature or refrigerated

Methodology
High Performance Liquid chromatography/Tandem Mass Spectrometry (LC-MS/MS)

Stability
Room temperature: 1 day; Refrigerated: 1 day; Frozen (-20°C): 1 day; Frozen (-70°C): 4 months

Reference Range
By report

Performed
Tuesday

Turnaround Time5-10 days
Test CodeISON
CPT-4 Code (s)
80375 (80299)
LOINC Codes
3697-0

Warde
Medical
Laboratory