Unfractionated Heparin, Anti-Xa

Synonyms

• Anti Xa
• HEPARIN ASSAY, UNFRACTIONATED, ANTI-XA
• LAB10459
• UFH

Cerner Name

Heparin Assay (Unfractionated)

Clinical Info

Specimen Sources

Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

Blood

Specimen Volume

Container

Blue Top Tube

Collection Instructions

Specimen must arrive immediately after draw within 4  Hours
 
Container/Tube:  Light blue-top (3.2% sodium citrate) tube 
Specimen:  Full tube or 1mL Platelet poor plasma  
Transport Temperature:  Refrigerated-entire tube Frozen Platelet poor plasma
Collection Instructions:  1. If no other tube is drawn, draw a discard tube.
2. Fill tube completely.
3. Mix by gently inverting several times.
4. Centrifuge twice ( double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results.)
Note:  Patient must be on unfractionated heparin.

Transport Instructions

Refrigerated

Specimen Stability

Methodology

Chromogenic-IL ACL TOP

Days Performed

Performing Laboratories

Northwell Health Laboratories

CPT

85520

PDM

5608150

Results

Result Interpretation

Forms