Specimen:

Serum, Plasma, Spinal Fluid

Collection Medium:

Minimum:

Submit only 1 of the following specimens:

Plasma - Draw blood in a lavender-top (EDTA) tube(s).  Send 1 mL Plasma 
for a peak level should be drawn 30 minutes after completion of 
infusion of an intravenous dose or 60 minutes after an intramuscular or 
oral dose of the antimicrobial to be assayed.  (Absolute Plasma 
Minimum:  0.3 mL)

Serum - Draw blood in a plain, red-top tube(s).  Send 1 mL Serum for a 
peak level should be drawn 30 minutes after completion of infusion of 
an intravenous dose or 60 minutes after an intramuscular or oral dose 
of the antimicrobial to be assayed.  (Absolute Serum Minimum:  0.3 mL)

Spinal Fluid - 1.0 mL of spinal fluid. Send specimen frozen in plastic 
vial.  (Absolute CSF Minimum:  0.3 mL)

Rejection Criteria:

Gel separator tubes.

Analytic Time:

5 days upon receipt at reference laboratory

Reference Range:

PLASMA OR SERUM
  Peak:  100 ug/mL
  Trough:  50 ug/mL
SPINAL FLUID
  No established reference values

Comments:

Indicate specimen type on request form and label specimen 
appropriately.

Methodology:

High-Performance Liquid Chromatography (HPLC)

CPT Code:

82491