Please note that this site is unsupported on Internet Explorer, and may not function as intended.

We recommend upgrading to the latest version of Microsoft Edge, Google Chrome or Firefox.

Test & Collection Guide

Pathology staff view

 New search...

Keyword Search:

Test name:

  

Manual search:

Anti-Xa Assay

Ordering information:

Required information: the anticoagulant type ( ie. unfractionated Heparin, Clexane, Fragmin, Rivaroxaban, Apixaban or Fondaparinux ) being monitored MUST be indicated on the request.

This information is required to select the correct assay.

Alternate names:
10a, Apixaban level, Clexane level, F10a, Fondaparinux level, Fragmin level, Rivaroxaban level, Unfractionated heparin level
Laboratory:
Coagulation
Test Code:
10A: Clexane, 10AH:Plasma Heparin, APIX: Apixaban, RIVX: Rivaroxaban, FONX: Fondaparinux
Specimen types:
Plasma
Container types:
Sodium CitrateSodium Citrate
Collection Instructions:
Sample haemolysis may make this test unreportable
Samples found to have clots cannot be tested

Excerise great care in collection and handling of plasma to avoid the release of platelet factor 4 (PF4) which is a potent inhibitor of heparin.

Sampling times

Clexane       3 hr post injection.

Fragmin       3 - 4 hr post injection.

3.5 mL Sodium Citrate tube filled to label marker, mixed by inversion and sent to laboratory immediately.

Do not use 1 ml citrate tubes.

 

Minimum Adult Volume:
4 mL
Notes:

If testing is delayed by more than 4 hours: spin separate and freeze plasma (plasma should be double spun)

Specimen rejection: specimens that are under or over filled , specimens that do not meet identification requirements.

Frequency:
Daily
Result Turnaround Time:
2 days
Reference Interval:

Therapeutic range can depend on treatment regime and be influenced by renal function and weight.

Contact the Haematologist / Registrar for advice. 

Laboratory Use Only

  

 

If EMR is not available, Pathology results are available from Auscare.  If you do not have an Auscare login,please complete attached form. https://pathology.easternhealth.org.au/handbook/downloads/Auscare%20access.pdf

Instruction on how to use Auscare - https://pathology.easternhealth.org.au/handbook/downloads/Auscare%20instructions.pdf

SPECIMEN COLLECTION MODULE (SCM) FAQs - CLICK HERE

CLICK HERE for a consent form to perform tests not covered by Medicare

TURN AROUND TIMES - When will my result be available?

CLICK HERE for Minimum Labelling Requirements

CLICK HERE for a printable Pathology request form

CLICK HERE for a Log sheet for recording Pathology results

"THE ART OF CCCCOLLECTION"

PLEASE CLICK HERE FOR THE PREFERRED ORDER OF DRAW

 

Pathology Handbook

Test & Collection Guide

Feedback

Eastern Health Pathology always welcomes the opportunity to improve the service we provide you.