Veripath Test Directory

Epic Test Name METHOTREXATE LEVEL
Components
Synonyms
Description
Specimen Requirements 
Container Preferred: Green/yellow (Lithium Heparin) Acceptable: Serum (plain red top), K2 or K3 EDTA (Plasma)
Specimen Type Blood
Preferred Collection Volume 3 mL
Minimum Collection Volume 2 mL; Neonates 0.5 mL
Collection Instructions
Specimen Handling
Rejection Criteria
Methodology EIA
Reference Range No specific reference range. See below for critical values.
CPT Code(s) 80299
Department Chemistry
Contact Information Lab (main): 214-633-5227
Turn Around TimeSTAT 1 hr; Routine less than 4 hrs
Performed Sunday - Saturday
Performed by Chemistry
Link
Notes Following post-infusion levels indicate increased risk of toxicity.
1. 24 - hr post - infusion concentration : >5.00 mcmol/L
2. 48 - hr post - infusion concentration : > 0.50 mcmol/L
3. 72 - hr post - infusion concentration: > 0.05 mcmol/L
4. Anytime post treatment > 20.00 mcmol/L.
Updated/Reviewed 09/28/2017


Label