ANTI-THROMB 3 ACT

Test Code

LAB7854

CPT Codes
85300

Preferred Specimen

Blue Tube (Sodium Citrate)

Patient Preparation
Standard venipuncture. Avoid traumatic puncture. Invert tube "end to end" to prevent clotting. Tube MUST be full for proper whole blood to anticoagulant ratio

Instructions

Refer to document below 'Obtaining A Platelet-Poor Specimen'.

Transport Container

Blue Tube

Transport Temperature

Refrigerate or freeze

Specimen Stability

2-8°C up to 2 days
otherwise freeze at -20° or lower

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolyzed
Clotted
Citrate tube underfilled or overfilled
Sample received more than 2 days after collection (has not been centrifuged and frozen)

Methodology
Chromogenic

Setup Schedule

M, W, F (day shift only)

Batched; once per day run

Report Available

Same day testing occurs

Reference Range

84 - 160%

Clinical Significance

Evaluate response to heparin, liver function, and identify hypercoaguability. If blood is drawn from an indwelling catheter, flush line with saline and the first 5ml of blood discarded. Do not thaw and refreeze.

Performing Laboratory
Alverno Central Lab

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.