Test Overview
High-Performance Liquid chromatography with Ultraviolet Detection (HPLC-UV)
Therapeutic Drug Monitoring
The effective concentration range of isoniazid is dependent upon the minimum inhibitory concentration of the pathogen being treated. Toxic range: greater than 20 ug/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Isoniazid is known to have limited stability in biological specimens which may be concentration and storage condition dependent. Negative or lower than expected results should be interpreted with caution.
Test Details
5 - 9 days
Specimen Requirements
Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate (preferred) or freeze.
Additional Information
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.