ANTI XA LMWH
Heparin Anti-Factor Xa Low Molecular Weight Heparin, Plasma
EPIC Test Procedure Code: LAB2184
Synonyms:
Lovenox level
Enoxaparin level
Heparin (Lovenox)
LMWH
Performing Lab:
Saint Luke's Regional Laboratories
Container Type:
Light blue top (sodium citrate) tube
Specimen Type:
Platelet Poor Plasma
Preferred Volume:
2 mL
Minimum Volume:
1 mL
Collection Procedure:
Specimen Processing:
1. Centrifuge specimen in a centrifuge that has been validated to ensure platelet poor plasma.
2. Immediately transfer the plasma to a stoppered, plastic tube and centrifuge again for 10 minutes.
3. Transfer the supernatant plasma into a screw-capped, plastic vial and send frozen.
4. If unable to centrifuge, forward unprocessed sodium citrate whole blood (minimum volume: 2 mL) to the laboratory promptly at room temperature only.
The unspun specimen must arrive within 30 minutes of collection.
Store and Transport:
Plasma - frozen (unless performed at your facility)
CPT Codes:
85520 - Heparin Anti Factor XA Assay UFH (EAP 30021165)
Test Schedule:
Monday through Sunday
Method:
Chromogenic
Reference Ranges:
Treatment of venous thromboembolism (VTE)
Twice daily:
0.5 - 1.0
U/mL
Once daily:
1.0 - 2.0
U/mL
Prophylaxis of VTE:
0.2 - 0.4
U/mL
Notes:
Used to monitor low molecular weight heparin therapy.