PROTHROMBOTIC (ON COUMADIN)
PROTHROMBOTIC (NO COUMADIN)
Partial Thromboplastin Time
DILUTE RUSSELL'S VIPER VENOM
Hexagonal phospholipid neut
FACTOR VIII ASSAY
ANTITHROMBIN III ACTIVITY
Activated Protein C Resistance
PROTEIN C ACTIVITY
PROTEIN S ANTIGEN FREE
Looking to order a test?
We’ve provided helpful links to make ordering easy.Find a Requisition
All specimens should be accompanied by a requisition.Submitting Specimens
Learn about how to properly label and where to ship specimens.Order Kits and Supplies
MLabs provides all the supplies necessary for the collection of specimens.Test FAQ
Visit our provider FAQ and learn about common questions to ordering tests.
see individual tests
Comprehensive study to determine causes of venous thrombosis.
Interpretive report provided for abnormal results
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in 7 blue top (citrate 3.2%) tubes. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into 7 plastic tubes, 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.
Please provide clinical history (brief description of the reason for testing, e.g., history of easy bruising and menorrhagia, family history of von Willebrand disease) and a listing of current and recent medications, including oral contraceptives, anticoagulants, and factor replacement therapy/DDAVP.