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A patient who is not on heparin and has no history of a factor deficiency has a prolonged partial thromboplastin time (PTT). Select the test that should be performed next.

Select the next best test to run given the following PTT results on a patient’s plasma: Initial PTT 75 seconds Immediate 1:1 Mix with normal plasma 38 seconds Incubated 1:1 Mix with normal plasma 36 seconds

A 37-year old female patient has a PTT of 76 seconds (reference range: 25-37 seconds). Her plasma is mixed 1:1 with normal plasma and an immediate PTT is performed on the mix with a result of 37 seconds. What can be concluded at this point as the most likely diagnosis?

Which of the following makes a patient more prone to hemorrhage?

Why does prothrombin G20210A increase the risk of thrombosis?

What is used to activate protein C in the chromogenic assay used to determine its concentration?

The terms petechiae, purpura, and ecchymoses all describe:

Which of the following is used to treat DIC?

A patient has a platelet count of 650 x 10^9/L. The other hematology tests are normal. No evidence of hemostasis failure exists. Which of the following is most likely?

Which of the following patient groups is most commonly diagnosed with acute immune thrombocytopenic purpura?