Methodology
Hexagonal Phospholipid Neutralization Clot Assay
Synonyms
Lupus Anticoagulant-Hexagonal Phospholipid Neutralization; Hex Phase Neutral
Specimen Type
Plasma
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01241
Lab Test Days
Monday-Saturday
Standard TAT
3-5 Days
Collection Information
Specimen Required
(one) 1.8 mL or (one) 2.7 mL Blood
Container Type
Light Blue (Sodium Citrate)
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 90 Days
Rejection Criteria
Hemolysis; Thawed plasma; Received room temp; Received refrigerated
Test Volume Required
1.5 mL Platelet-Poor Plasma
Minimum Test Volume
0.5 mL Platelet-Poor Plasma
Processing Instructions
Platelet-Poor Plasma: Centrifuge light blue-top tube for 15 minutes at approx. 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcl). Freeze immediately and send frozen.
CPT Codes
85598
Revised
07-27-19
Initials
SL