Test ID: MTX
CPT code: 83520
LOINC: 3793-7
Specimen Type: plasma-wrap in foil
Frequency: Setup: Daily; TAT <24 hrs
Instructions: LAV tube (1.0mL plasma). Draw on ice and protect from light.
Transport refrigerated. Green nongel also acceptable.
Text: Monitor therapeutic levels; evaluate toxicity.
Methodology: Immunoassay