Test Information:
LA 1 Screening Reagent and LA 2 Confirmation Reagent are simplified DRVVT reagents for the detection of Lupus Anticoagulant (LA) in one-stage clotting tests. They occur in various clinical conditions, especially autoimmune diseases and are now considered to be a significant risk factor in patients with otherwise unexplained thrombosis and are often present in women who have recurrent fetal loss.
Specimen Container:
Blue Top Tube (Sodium Citrate)
Specimen Type:
Plasma
Required Volume:
2 mL
Patient Preparation:
No Patient Preparation
Notes:
To obtain optimal results, it is recommended to separate plasma from whole blood within 15 minutes from the time of collection; aliquoted specimen must be transported within 4 hours from the time of collection.
For aliquoted specimen, DO NOT USE GLASS TUBE CONTAINER.
- However, if delay in transportation occurs, it is vital to follow the stipulated storage and stability. Specimen received beyond the stipulated storage and stability is considered “sub-optimal” in nature.
- For FROZEN specimen, send specimen on running day prior to cut-off period ; ONE TIME THAWING ONLY!
Storage & Stability
(Before Processing)
- Storage: 2 to 8°C
Stability: 4 hours - Storage: – 20°C
Stability: 1 week
Transport Temperature:
Freshly collected specimen: Ref (2°C to 8°C)
Frozen specimen: Frozen (- 20°C)
Test Category:
Batch
Test Schedule:
Specimen receiving CUT-OFF: Tuesday and Friday, 1100H
All specimen received beyond cut-off will be included for the next batch processing.
Results Availability:
Wednesday and Saturday at 1200H