5 - 9 days
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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.
Collect specimen in a red top tube; do not use SST tube.
Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate (preferred) or freeze.