Sign in →

Browse by Name

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #
 

24-Hour Urine Collection Instructions - Spanish

 

24-Hour Urine Collection Instructions - English

 

Patient Portal Information

 

 

 

 

 

Mayo Clinic Laboratories

Test Code 1078803175 Anti-Xa Low Molecular Weight

Important Note

Listing in process - please contact lab

Performing Laboratory

Torrance Memorial Laboratories

Specimen Requirements

Submit the following specimen:

Specimen Type:  Platelet-poor plasma.  Frozen samples must be double spun

Container/Tube: Light-blue top (3.2% sodium citrate)

Minimum volume: 1 mL plasma

Rejection:  Clotted, wrong anticoagulant, under or over-filled, gross hemolysis, gross lipemia, gross icteric

Specimen Transport Temperature

Ambient

Storage Temp Stability:

Ambient: 2 hours

Frozen:  14 days

Methodology

1-stage chromogenic assay.  Performed on Instrumentation Laboratory ACL TOP 500

Reference Range

0.5 - 1.0 IU/mL 

Interpretive Data:

Heparin Anti-Xa assay is used to measure heparin concentrations in patients receiving unfractionated heparin or low-molecular-weight heparin. 
Very low endogenous antithrombin III (AT III) levels might result in spuriously-low results.  
Antibodies to bovine factor X or AT III can interfere with assay (very rare). This is not a test for the presence of inhibitors directed against factor X.

 

Day(s) Test Set Up/TAT

Performed:

Daily 

Available STAT

 

TAT:

STAT: < 1 hr

Routine: < 4 hrs

Aliases

.

CPT Code

85520