Methotrexate

Alphabetical Test listing

Methotrexate-939

  
Methotrexate
  
939
  
83520.6
  
MTX
  
Mexate
  
Serum
  
  
2.0 mL
  
1.0 mL
  

Protect from light

  
  1. Spin and separate serum from the cells immediately
  2. Transfer serum to an Amber transfer vial/tube (AHL)
  3. Freeze if unable to send same day
  
  

Protect from light

Refrigerated - 24 hours

Frozen* - 1 month

 

  
  • Specimens collected in gel tubes
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
  
AHL - Chemistry: C
  
Daily
  
2 hours after set-up
  

Abbott Architect

  

Varies with clinical indications

  

> 50 µmol/L at 24 hrs post dose
> 10 µmol/L at 48 hrs post dose

  
80204
  
08/16/2004
  
01/07/2021
  
02/10/2020