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HelpTest Code LUPS Lupus Anticoagulant Screen
Additional Codes
| Epic Ordering Code | LAB3001 |
| NBS code | LBC04632 |
| Service code | 12414 |
Specimen Requirements
Submit the following:
| Preferred: |
| Light Blue Top |
|
|
Processing Requirements
Submit only one of the following specimens
Specimen Type: Whole Blood
Container/Tube: 2 Light Blue Top (3.2% Sodium Citrate)
Volume: 2 × 2.7 mL whole blood (Tubes must be full)
Collection Instructions: Send whole blood specimens to laboratory immediately.
Specimen Type: Platelet Poor Plasma
Container/Tube: 2 Light Blue Top (3.2% Sodium Citrate)
Submission Container/Tube: Plastic Vial
Minimum Volume: 2.0 mL plasma
Collection Instructions:
1. Light blue top tube must be properly filled with whole blood.
2. Whole blood specimen should be double centrifuged and plasma separated from cells within 1 hr of collection.
3. Plasma should be separated into 2 aliquots with minimum volume of 1.0 mL each.
4. Freeze the aliquots in well-closed plastic tubes immediately.
Specimen Stability
| Specimen Type | Plasma |
|---|---|
| Ambient | 4 hours |
| Refrigerate | Not available |
| Frozen | 14 days (preferred) |
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Gross Icterus | Reject |
| Gross Lipaemia | Reject |
| Others: Clotted or insufficient specimen | Reject |
Methodology
Photo-optical Clot Detection
Days and Times Performed
Monday through Friday, Office hours, TAT 10 days
Reference Interval
Absent
Testing Laboratory
National University Hospital
Haematology, 67725320
Useful For
Detects the presence of lupus anticoagulant, a phospholipid inhibitor. Consider this test in unexplained prolongation of APTT, recurrent abortions, thrombocytopenia or systemic lupus erythematosus.
Update
Last updated 22/06/2026
Panel Information
Panel includes the following tests:
- Prothrombin Time
- Activated Partial Thromboplastin Time
- LA Sensitive PTT
- Dilute Russell’s Viper Venom Test
Alias
Lupus Anticoagulant
LA Sensitive PTT
Dilute Russell’s Viper Venom Test
DRVVT
LOINC Code Information
| PT | 5902-2 |
|---|---|
| INR | 6301-6 |
| APTT | 14979-9 |
| LUPUS ANTICOAGULANT | 75514-0 |
| APTT(1+1) CORRECTION | 5946-9 |
| CONTROL PLASMA | 13488-2 |
Reflex Tests
- APTT mixing study if APTT is > 37.0 seconds
- Staclot LA