The INR, PT, PTT and bleeding test are not indicated in this patient. ... Abnormal test results often are ignored by clinicians or prove to be false-positive results.
A rapid HIV test is positive. Sputum Gram stain shows few neutrophils, pseudohyphae, and mixed bacteria. ... This patient with known HIV risk factors and a reactive rapid HIV test very likely has HIV infection, although confirmation with Western blot
Cases involving chest pain are presented.
A stool test is positive for occult blood. An abdominal ultrasound reveals thickening and edema of the ileum.
Gastric biopsies are taken to test for Helicobacter pylori. The patient is examined 24 hours after admission. ... acute pancreatitis, or (2) in a patient with gallstone pancreatitis who is not improving clinically and has worsening liver chemistry test
Which of the following would be the most appropriate next test in the evaluation of this patient? ... Diagnosis is made with a cosyntropin stimulation test, and hydrocortisone, 20 mg in the morning and 5 to 10 mg in the evening, is required after therapy
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Cold reactive autoantibodies are IgM antibodies and are not a cause of a positive IgG antibody test. ... In this case, the direct antibody test would be positive for complement but not IgG.
These cases and commentary, which address dermatology, are excerpted from ACP's Medical Knowledge Self-Assessment Program (MKSAP16).