Methotrexate

CERNER / EPIC MNEMONIC: MTRX
POE DESCRIPTION: METHOTREXATE
DAYS PERFORMED:

Daily - 24 hours

TURNAROUND TIME:

1 hour

SPECIAL INSTRUCTIONS: Draw time must be recorded on requisition.
CONTAINER TYPE: Red top tube - 10 mL or Red top tube - 4 mL
SPECIMEN REQUIREMENTS:

10 mL blood (5.0 mL serum)

MINIMUM VOLUME: 2 mL blood (1.0 mL serum)
REFERENCE RANGE: Questions regarding methotrexate dosing should be referred to Pharmacy. All methotrexate results are called to the requesting physician or nursing unit.
METHODOLOGY:

Fluorescent polarization Immunoassay (FPIA)