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HelpTest ID MTXSG Methotrexate Post Glucarpidase, Serum
Useful For
Monitoring methotrexate concentrations postglucarpidase therapy
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Methotrexate Post Glucarpidase, SSpecimen Type
SerumShipping Instructions
Ship specimen in amber vial to protect from light.
Specimen Required
Supplies: Amber Frosted Tube, 5 mL (T192)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Amber vial (T192)
Specimen Volume: 1 mL
Specimen Minimum Volume
0.2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | LIGHT PROTECTED |
| Frozen | 14 days | LIGHT PROTECTED | |
| Ambient | 7 days | LIGHT PROTECTED |
Reference Values
Nontoxic drug concentration after 72 hours: <0.1 mcmol/L
Day(s) and Time(s) Performed
Monday through Sunday; Varies
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MTXSG | Methotrexate Post Glucarpidase, S | 51602-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 62580 | Methotrexate Post Glucarpidase, S | 51602-1 |
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.NY State Approved
YesForms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.