Isoniazid, serum or plasma

Alphabetical Test listing

Isoniazid, serum or plasma-994

  
Isoniazid, serum or plasma
  
994
  
LAB994
  
MSO
  
Nydrazid
  

Therapeutic drug management

  
Serum
  
Heparin plasma - dk green, no gel
  

Red

  
2.0 mL
  
0.5 mL
  

Trough levels are most reproducible

  

Spin and separate within two hours of specimen collection.

  

Transfer vial/tube with cap - 12 mL (LabCorp)

  

Refrigerated (OK)

Ambient - <3 days

Frozen (OK)

  

Gel-barrier tubes are not recommended

  
MedTox via LabCorp (808376): R-NX
  
Th
  
10 - 14 days
  

High-pressure liquid chromatography with ultraviolet detection (HPLC/UV)

  

The effective concentration range of isoniazid is dependent on the minimum inhibitory concentration of the pathogen being treated.

Toxic range: >20 µg/mL

  
80375
  
01/30/2020
  
02/03/2020