antibodies, positive; serologic test for HIV antibodies, negative; and urinalysis, 2+ protein, 1+ blood, 15 erythrocytes/hpf.
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 invasive procedures and complications, are excerpted from ACP's Medical Knowledge Self-Assessment Program (MKSAP15).
The American Heart Association/American Stroke Association recommends a water swallow test performed at the bedside by a trained observer as the best bedside predictor of aspiration. ... A prospective study of the water swallow test demonstrated a
A pregnancy test is positive. She takes 4 mg of warfarin daily to maintain her INR between 2 and 3. ... Although a lupus anticoagulant was detected on initial presentation, the test was not repeated at one month when he was still receiving warfarin
L), reticulocyte count 12% of erythrocytes, total bilirubin 2.8 mg/dL (47.9 µmol/L), direct bilirubin 0.6 mg/dL (10.26 µmol/L), direct antiglobulin (Coombs test) positive ... The relationship between an abnormal screening coagulation test and the risk
Overnight polysomnography is the appropriate test for this patient, because obstructive sleep apnea almost always accompanies this disorder.
A. aPTT mixing study. B. Direct antiglobulin (Coombs) test. C. Intravenous immune globulin. ... A positive test result would not explain the presence of schistocytes on the peripheral blood smear.
The following cases and commentary, which address infectious diseases, are excerpted from ACP's Medical Knowledge Self-Assessment Program (MKSAP14).