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HelpTest Code LAB481 Methotrexate
Performing Laboratory
Asante Rogue Regional Medical Center
Specimen Minimum Volume
1.0 mL
Billing Code
30000564
Methodology
Fluorescent Polarization Immunoassay (FPIA)
Specimen Requirements
Protect from light immediately after collection
Specimen should be collected 24, 48 and 72 hours after a single dose
Note date and time of dose
Day(s) Test Set Up
Testing performed daily upon receipt of specimen in the laboratory; results are phoned
Test Classification and CPT Coding
80204 DRUG ASSAY METHOTREXATE
Additional Information
Methotrexate is an antineoplastic drug used solely or in combination with other antineoplastic drugs for the treatment of leukemia and other diseases. Methotrexate has been proven useful in the management of acute lymphoblastic leukemia in children, choriocarcinoma and related trophoblastic tumors in women, carcinomas of the breast, tongue, pharynx, testes, lung and osteogenic sarcoma. Low doses are used in non-malignant
disorders such as severe psoriasis, asthma, rheumatoid arthritis, sarcoidosis and transplantation therapy.
Performing Department
Chemistry
Reasons for Rejection
Icterus
Lipemia
Hemolysis
Quantity not sufficient (QNS)
Lack of Two Patient Identifiers:
1-Patient’s First & Last name
2-Patient’s Date of Birth
Specimen Transport Temperature and Stability
TRANSPORT IMMEDIATELY AFTER COLLECTION TO LABORATORY
Stable 48 hours at 2° to 8° C
Freeze if testing delayed