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Austin Pathology
Test Directory
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Isoniazid Level (Blood)
Alternate Names
Isoniazid Level Pre Dose, Isoniazid Level Post Dose
Test Code
MISCSO
Testing Laboratory
Referred Laboratory
Specimen Type
Blood
Container Type
4 mL EDTA (Purple Top) - DEDICATED
Medicare Rebate
Yes
Out of Pocket Costs
None
Ordering Information
-
Collection Instructions
LABORATORY BASED COLLECTION ONLY.
Food can significantly delay and reduce the 2 hour concentration of isoniazid. The patient should be fasting and the blood sample collected 1.5 to 2.5 hours after the isoniazid dose is given.
If the patient needs food, give the isoniazid dose, wait 1 hour before food is taken and collect sample 2 hours after isoniazid dose.
If the patient has already eaten, wait 2 hours before giving the isoniazid dose.
Please collect 1 x DEDICATED 4mL EDTA tube on ice and send to the laboratory as soon as possible.
Record collection date and time and last dose time on the request form.
