A patient with chronic kidney disease on hemodialysis develops severe muscle cramps and weakness. ECG shows prolonged QT interval. Which electrolyte abnormality is MOST likely responsible for these findings?

A patient presents with fever, chills, and a new heart murmur. Blood cultures are positive for Streptococcus viridans. Which of the following is the MOST appropriate initial empiric antibiotic therapy?

A scientist is studying a viral infection. To track the progression of the infection in a patient sample, which molecular technique would be most appropriate for quantifying the amount of viral DNA present?

A 25-year-old male presents with acute onset of flank pain radiating to the groin, nausea, and vomiting. Urinalysis reveals hematuria. A non-contrast CT scan shows a 3mm stone in the distal ureter. Which of the following is the MOST appropriate initial management?

A patient presents with persistent cough, fever, and night sweats. A chest X-ray reveals granulomas. Which of the following is the most likely diagnosis?

A 30-year-old female presents with recurrent episodes of severe abdominal pain, vomiting, and peripheral neuropathy. Urine porphyrin levels are elevated. Which enzyme deficiency is MOST likely responsible for her condition?

A doctor, while operating on an HIV^+ patient accidently cut himself with a scalpel. He comes to you, suspecting himself to have contacted the virus. Which test will you advise him to rule out/confirm his suspicion?

A 60-year-old male with a history of hypertension and diabetes presents with sudden onset of severe tearing chest pain radiating to the back. Which of the following diagnostic tests is MOST likely to confirm the diagnosis?

A patient experiences severe chest pain radiating to the left arm. Which diagnostic test is most crucial to confirm a suspected myocardial infarction?

A patient presents with jaundice, abdominal pain, and a history of intravenous drug use. Which of the following is the most likely cause?

Early and accurate diagnosis of genetic disorders is crucial for effective intervention. Which of the following molecular techniques is most suitable for identifying a specific gene mutation associated with a disease?