Home
HelpTest Code LMWH Heparin, Low Molecular Weight
Additional Codes
| EPIC | LAB4139 |
Synonyms
- Fragmin (Dalteparin)
- Lovenox (Enoxaparin)
- Arixtra (Fondaparinux)
Purpose
Heparin is the most frequently used antithrombotic drug. The biological activity of the sulphated glycosaminoglycan resides in its ability to accelerate (up to 2000-fold) the inhibitory effect of antithrombin on coagulation proteases.
Methodology
Chromogenic analysis
Sample Type
| Preferred Sample Type | |
|---|---|
| Light blue top - Na Citrate Plasma | |
Centrifuge: Yes
Specimen Minimum Volume
0.5 mL
NOTE: Na Citrate Blue top tubes require that the tube is filled adequately to maintain the 9:1 blood to anticoagulant ratio.
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) (store) | 2 hours |
| Refrigerated (2-8°C) | N/A |
| Frozen (-15 to -20°C) | N/A |
NOTE: Separate plasma from cells within 2 hours
Reference Ranges
| Therapeutic Range | |
|---|---|
| Enoxaparin (IU/mL) | |
| Prophylactic | 0.2 - 0.4 |
| Therapeutic (2 doses/day) | 0.6 - 1.0 |
| Therapeutic (1 dose/day) | 1.3 - 2.0 |
| Dalteparin (IU/mL) | |
| Prophylactic | 0.2 - 0.4 |
| Therapeutic (2 doses/day) | 0.6 - 1.0 |
| Therapeutic (1 dose/day) | 0.85 - 1.25 |
| Fondaparinux (mg/dL) | |
| Prophylactic (2.5 mg daily) | 0.2 - 0.4 |
| Therapeutic (7.5 mg daily) | 0.5 - 1.5 |
| Critical Value |
|---|
| >2.00 IU/mL |
Rejection Criteria
| Hemolysis | N/A |
|---|---|
| Icterus | N/A |
| Lipemia | N/A |
- Clotted samples
- Underfilled or overfilled samples
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Hematology
CPT Code
85520
LOINC
3270-6 LMW Heparin Coag Qn (PPP)