Apixaban anti-Xa-994

Test info

  
Apixaban anti-Xa
  
994
  
LAB994
  
MSO
  

To measure plasma apixaban concentration in ng/mL.

Specimen

  
Sodium citrate (Na cit) plasma
  
  
1.0 mL
  
0.5 mL
  
  1. Spin
  2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
  3. Freeze
  

Frozen (preferred)

Freeze/thaw cycles: stable x6

Ambient - 6 hours

  
  • Gross hemolysis
  • Gross lipemia

Performance

  
LabCorp Burlington (504385): R-NX
  
Mo - Fr
  
2 - 5 days
  

Chromogenic anti-Xa. Apixaban inhibition of factor Xa (present in excess). Residual Xa is measured using a chromogen and is inversely proportional to the apixaban present.

Clinical and Interpretive info

  

Although routine monitoring is not needed, there are a number of clinical circumstances in which clinicians want or need to know a patient's Apixaban level. Levels can be accurately and precisely measured using either a chromogenic anti-Xa assay or LC/MS-MS.

Billing

  
85130

Tracking

  
08/29/2019
  
01/27/2021
  
06/05/2021