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HelpTest ID BLOD1007 Methotrexate Prior Leuco Dose
Specimen Type/Requirements
Red top (Serum w/out gel) tube - Serum
Do not collect in gel separtor tubes.
Specimens from patients who have received glucarpidase (carboxypeptidase G2) as a high dose methotrexate rescue therapy should not be tested with this method. These patients have an increased level of metabolite that cross reacts with the methotrexate antibody. These metabolites stay in circulation for 5-7 days.
Test is not affected by hemolysis or lipemia.
Specimen Volume
| Preferred Volume | 1.0 mL |
|---|---|
| Minimum Volume | 1.0 mL |
Stability/Transport
| Room Temperature | 1 day | |
|---|---|---|
| Refrigerated | 14 days | Preferred for transport |
| Frozen | Indefinitely |
Performed Test Frequency
Monday through Sunday
Methodology
Enzyme Immunoassay
Performing Lab
Sanford Laboratories Sioux Falls
CPT
80299
Interface Build Information
| Result Code | Result Code Description |
|---|---|
| 2717 | Methotrexate Prior |