Yale New Haven Hospital

Department of Laboratory Medicine
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Anti-Xa activity, LMWH

Lab Section: 

Coagulation

 

Lab Location: 

Main Lab

Test ID: 

LAB2614

 

Synonyms: 

Anti-Xa Activity Lovenox Fragmin

Methodology: 

Chromogenic/ Inhibition of Xa

Schedule: 

MWF

Reported: 

3 - 5 days

Specimen Requirements: 

Collection: 2.7 mL Blood in a Blue Top Tube.
Pediatric volume: 2.7 mL.
Collect sample 3-5 hours post dose. Do not draw from heparinized line. Tubes must be full.
Transport: Whole blood may be transported at ambient or refrigerated temperature. Separated plasma, not yet frozen, may be transported at refrigerated temperature, while frozen plasma should be sent on dry ice to prevent thawing in transit.
Unacceptable conditions: QNS; overfilled; Clotted

 

Notes: 

Clinical Indications: Monitor anticoagulant therapy

Do not order coagulation Factor X

Reference Interval: 

Age Limit

Sex

Normal Range

Units

0 Days - 999 Years

Any

See Comment

u/mL

 

CPT Code(s): 

85520

Last Changed: 

09/04/2016 14:59:21

Last Reviewed: 

8/17/2017 12:42 PM