🩺 Q235: A patient with severe vitamin K deficiency would likely show which coagulation profile results?

🩺 Q236: Which of the following is the most sensitive indicator of iron deficiency anemia in a patient with chronic inflammation?

🩺 Q237: A patient presents with hypertension, hypokalemia, and metabolic alkalosis. Plasma aldosterone is elevated, but plasma renin activity is suppressed. What is the most likely diagnosis?

🩺 Q238: Which enzyme is most specific for the diagnosis of liver disease when compared to bone or placental sources of elevated alkaline phosphatase?

🩺 Q239: A 24-year-old male presents with a painful penile ulcer and inguinal lymphadenopathy. A darkfield microscopy of the exudate is negative. Which diagnostic test is the next most appropriate step to confirm primary syphilis?

🩺 Q240: Which of the following describes the mechanism of TRALI (Transfusion-Related Acute Lung Injury)?

🩺 Q241: Which antibody is most commonly associated with Delayed Hemolytic Transfusion Reactions (DHTR)?

🩺 Q242: What is the shelf life of Platelet Concentrates stored at 20-24°C with continuous agitation?

🩺 Q243: A patient returns from a trip to Southeast Asia and presents with persistent diarrhea. A stool O&P exam reveals large, oval eggs with a prominent operculum and a small abopercular thickening. What is the most likely parasite?

🩺 Q244: A laboratory isolate from a blood culture is a Gram-positive coccus in chains. It is catalase-negative and shows beta-hemolysis on sheep blood agar. The organism is resistant to bacitracin and shows positive growth in 6.5% NaCl broth. What is the identity of this organism?

🩺 Q245: In the laboratory diagnosis of Herpes Simplex Virus (HSV) in vesicular fluid, which technique provides the most rapid definitive identification of the viral antigen?

🩺 Q246: A patient presents with a 'mouse-nest' odor from a wound infection. The isolate is a non-fermenting, Gram-negative rod that produces a fruity/grape-like odor on culture plates and is oxidase-positive. What is the most likely pathogen?

🩺 Q247: A peripheral blood smear examination reveals intraerythrocytic rings with 'Maltese cross' forms. Which tick-borne parasite should be suspected?

🩺 Q248: Which organism is known for its 'darting motility' in wet mount preparations and grows optimally at 42°C in a microaerophilic atmosphere?

🩺 Q249: A sputum sample from a patient with pneumonia shows Gram-negative diplococci. The isolate is oxidase-positive and produces DNAse. Which organism is this?

🩺 Q250: In the ABO reverse grouping, why is it necessary to use A1 and B cells?

🩺 Q251: A 28-year-old female presents with a butterfly rash, symmetrical joint pain, and markely reduced serum C3 and C4 levels. Which complement pathway is primarily activated and consuming these complement proteins?

🩺 Q252: A 35-year-old patient with clinical signs of secondary syphilis presents with a non-reactive RPR test result. When the laboratory dilutes the serum 1:10 and retests, the RPR result becomes strongly reactive (1:64). What phenomenon explains the initial false-negative result?

🩺 Q253: Microscopic examination of an acidic urine sample (pH 5.5) reveals flat, colorless, hexagonal plate-like crystals. The patient has a history of recurrent kidney stones. Which metabolic defect is associated with these crystals?

🩺 Q254: A fresh urine specimen displays a red color. The dipstick reagent pad for blood is strongly positive (3+), but microscopic examination reveals only 0-1 RBC/HPF. Ammonium sulfate is added to precipitate hemoglobin; after filtration, the red color precipitates out, leaving a clear supernatant