Heparin Anti-Xa, Low Molecular Weight Heparin

0030144
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Example Reports
In Range

Ordering Recommendation

Monitor treatment efficacy of low molecular weight heparin. 

Mnemonic

HA LMW

Methodology

Chromogenic Assay

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.

Specimen Preparation

Centrifuge specimen within one hour of collection. Transport 2 mL platelet-poor plasma. (Min: 1.5 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Serum. EDTA, oxalate, heparin, or plasma separator tubes. Specimens refrigerated more than eight hours. Hemolyzed specimens.

Remarks

This test cannot be used to quantitate anticoagulants other than low molecular weight heparin. This includes, but is not limited to, direct oral anticoagulants and Fondaparinux (Arixtra).

Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
University of Utah Clients: After separation from cells: Ambient: 4 hours; Refrigerated: 8 hours; Frozen: 2 weeks

Reference Interval

0.50-1.10 U/mL

Interpretive Data

Therapeutic range based on enoxaparin brand low molecular weight heparin.

Compliance Category

FDA

Note

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
05/17/2021
X
X
N/A

CPT Codes

85520

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Components

Component Test Code* Component Chart Name LOINC
0030144 Heparin Anti-Xa Lmwh 3274-8
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Anti-10a
  • Anti-Xa
  • Heparin Anti-Xa Assay
  • Heparin Anti-Xa Assay, Plasma
  • Low-Molecular Weight Heparin Assay
Heparin Anti-Xa, Low Molecular Weight Heparin