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.
Allow to clot for 30 minutes, separate serum from cells immediately by centrifugation and aliquot into a labeled polypropylene or similar plastic tube. Use a separate tube for each test ordered. Allow room for expansion of sample inside tube.
Preferred volume: 2 mL of serum (or plasma).
Minimum volume: 0.5 mL serum (or plasma).
If minimum volume cannot be obtained, contact Laboratory.
Severe hemolysis, thawed samples for greater than 24 hours
Fully complete PK requisition, including drug dose amount, frequency, method, and date and time of last dose prior to draw.
Ship samples via overnight delivery on >3 lbs of dry ice
Freeze at -70C if possible, but at minimum -20C. Up to 24 hours at room temperature.
Ship samples to be received Monday through Friday. Do not ship on Friday or Saturday. For shipping and detailed collection instructions, click here.
Within 10 days
GC/MS (Ethambutol, Level);pharmacokinetics (Ethambutol, Level);mycobacteria (Ethambutol, Level);Myambutol (Ethambutol, Level);EMBH
For shipping and detailed collection instructions, click here.