Azathioprine


Sunquest Code:AZAT  
Epic Code:LAB3302Epic Name:Azathioprine
Synonyms:Imuran
Methodology:High performance liquid chromatography with ultraviolet detection
CPT Code:80299
Test Includes:Measured as 6-Mercaptpurine
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 5 days.


Collection Instructions

Specimen:Blood
Optimal Volume:4 mL
Minimum\Peds Volume:1.4 mL
Container:Red (no gel) (Green (lithium heparin, no gel), Green (sodium heparin, no gel))
Collection Instructions:Trough levels are the most reproducible.


Processing and Shipping

Specimen Processing:Aliquot 2 mL, 0.6 mL minimum. Store at room temperature.
Shipping Instructions:Ship at room temperature.
Test Performed at or Referral Lab Lab Sendouts  (MedTox)
Referral Lab number:402


Interpretive

Reference Range:Azathioprine is measured as the metabolite, 6-Mercaptopurine. Therapeutic and toxic ranges have not been established. Usual therapeutic doses produce 6-Mercaptopurine serum concentrations of less than 1000 ng/mL.


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