Blue top tube, 3.2% sodium citrate
Full 2.7 mL tube or 1 mL plasma aliquot
Full 1.8 mL tube or 1 mL plasma aliquot
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.
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. 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.
Monday-Friday The test is not run on holidays, but will be run the next business day instead.
3 hours
Heparin-associated antibodies to PF4 detected by an ELISA technique.
0.000 - 0.399. Negative
Detection of heparin-dependent platelet antibodies.
The heparin antibody assay is intended as a screening test and should not be relied upon solely to establish the diagnosis of heparin-induced thrombocytopenia.The decision to discontinue heparin therapy is a clinical one and should not be delayed due to a pending HIT antibody test or serotonin-release assay. Please see the clinical HIT guideline for details. https://pharmwebsp.med.umich.edu/_layouts/15/WopiFrame.aspx?sourcedoc=/GuideLines/Anticoagulation/HITGuideline.docx&action=default
6002-0
86022
31142
Specimens will be rejected if not properly filled, clotted, grossly hemolyzed, or contaminated with heparin.
Room temperature for whole blood or frozen aliquot of citrated plasma.
STAT testing is not available for this test. The decision to discontinue heparin therapy is a clinical one and should not be delayed due to a pending HIT antibody test or serotonin-release assay. Please see the clinical HIT guideline for details. https://pharmwebsp.med.umich.edu/_layouts/15/WopiFrame.aspx?sourcedoc=/GuideLines/Anticoagulation/HITGuideline.docx&action=default