2 hours
Test Updated:
Thromboplastin Inhibition test TTI
HEXAG
Staclot LA
Lupus Anticoagulant
Hexagonal LA
Hexagonal phospholipid neut
Phospholipid Antibody (Lupus Anticoagulant)
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Test Overview
Optical determination of clotting time after addition of hexagonal phospholipid reagent.
Detection of phospholipid antibody (lupus anticoagulant) in plasma.
Negative or <= 9.0
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic tube, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.
