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Test Code LAB1071 Methotrexate, Plasma or Serum

Important Note

PROTECT FROM LIGHT

Additional Codes

Test Name in EPIC EPIC Test Code Mnemonic
METHOTREXATE LAB1071 METHO

 

Methodology

Fluorescence Polarization Immunoassay (FPIA)

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred:

Specimen Type: Plasma

Container/Tube: Light-green top (lithium heparin gel)

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Separate plasma from cells within 2 hours of draw.

2. If plunger filters are used, immediate removal of serum is indicated unless an air gap can be created between the device and specimen.
Additional Information:

1. Protect specimen from light.

2. Label specimen appropriately (plasma).

 

Alternate:

Specimen Type: Serum

Container/Tube: Serum gel

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Separate serum from cells within 2 hours of draw.

2. If plunger filters are used, immediate removal of serum is indicated unless an air gap can be created between the device and specimen.

Additional Information:

1. Protect specimen from light.

2. Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate 24 hours/Frozen OK/Ambient NO

Day(s) Test Set Up

Monday through Sunday

Performing Laboratory

Chemistry-

SMDC Clinical Lab

Test Classification and CPT Coding

80204

Reference Values

0-0.10 µmol/L

Non-toxic drug concentration after 48 hours: <0.1 µmol/L