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Apixaban-994

Test info

Test name:

Apixaban

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Eliquis
Apixaban anti-Xa

Useful for:

To measure the drug level in order to monitor therapeutic level and/or diagnose under-dosage or potential toxicity.

Specimen

Specimen type:

Sodium citrate (Na cit) plasma

Collection container:

Lt blue Sodium citrate (NaCit)

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediatley following collection, mix sample by gentle inversion 3 - 4 times to prevent clotting

Processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as Na citrate plasma
Freeze within six (6) hours of sample collection

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Transport and stability:

Ambient (preferred) - 7 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles: stable x3

Reason for rejection:

Gross hemolysis
Gross lipemia

Performance

Performing lab:

LabCorp Burlington (117085): R-NX

Days set up:

Mo - Fr

TAT:

5 - 7 days

Method:

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Clinical and Interpretive info

Reference ranges:

See report

Clinical information:

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

CPT codes:

80299

Tracking

Date created:

08/29/2019

Revised date:

04/28/2026

Review date:

04/28/2026