Blue top Vacutainer® tube, 3.2% sodium citrate
Full 2.7mL blue top 3.2% sodium citrate Vacutainer® tube or 1mL plasma aliquot
Full 1.8mL blue top 3.2% sodium citrate Vacutainer® tube or 1mL plasma aliquot
Specimen must be received in lab within 23 hours of collection to allow for adequate processing and testing time. Alternatively, aliquot and freeze within 24 hours of collection.
Collect specimen in a blue top 3.2% sodium citrate Vacutainer® tube. Mix by inversion. Specimen should arrive at lab within 23 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic tube, and freeze the specimen within 24 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 3.2% sodium citrate Vacutainer® tube. Mix by inversion. Specimen should arrive at lab within 23 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.
Daily, 24 hours
2 hours
Chromogenic Substrate Assay
Normal individuals have no low molecular weight heparin activity. Target Therapeutic Range:
Used to monitor treatment with low-molecular weight heparins: danaproid, enoxaparin, dalteparin, fragmin, lovenox
Test is not indicated if the patient is receiving unfractionated heparin or other Anti-Xa drugs.
Sample should be drawn after 3 doses of enoxaparin, at steady state. The peak level is recommended and should be drawn 4-6 hours post dose. Trough level is preferred in renally impaired patients.
85130
31100
Specimens will be rejected if not properly filled, clotted, grossly hemolyzed, contaminated with heparin or received outside acceptable time limits.
Room temperature for whole blood or frozen aliquot of citrated plasma.
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).