A Patient's Laboratory Test Results Are Negative for D-Dimers

Multiple Choice

A patient's laboratory test results are negative for D-dimers.However, the health-care provider is concerned that an interfering factor may be skewing the results of this test.Which of the following factors could cause a false-negative result in this case?

A) Aspirin
B) Ovarian cancer
C) Warfarin
D) Rheumatoid arthritis