91164 Methotrexate - Interpath Laboratory, Inc.

91164 Methotrexate

Specimen:

Collect:

One 10 mL Red Top

Also Acceptable
One 4 mL Lavender (EDTA)
One 4 mL Green Top (Li Heparin)
One 4 mL Gray Top
One 6 mL Pink Top (EDTA)
One 4 mL Green Top (Na Heparin)

Submit:

3 mL (Min:1 mL) Serum. Submit Frozen. Submit in a Standard Transport Tube.

Also Acceptable
3 mL (Min:1 mL) Plasma. Submit Frozen. Submit in a Standard Transport Tube.

Special Handling:

Protect from Light
Separate aliquot required for each frozen test ordered
Separate from cells ASAP
Protect from light during collection, storage, and shipment. Separate serum from cells within 2 hours of collection.

Rejection Criteria:

Use of gels
Use of separator tubes

Stability:

Ambient: 4 Hour(s); Refrigerated: 24 Hour(s); Frozen: 6 Month(s); Incubated: Unacceptable

Methodology:

Enzyme Immunoassay (EIA)

Performed:

Sun-Sat

Reported:

1-2 Day(s)

CPT Codes:

80299

Interpretive Data:

General Reference Range : 0.50-1.00 umol/L