Which of the following laboratory values indicate a potential risk of bleeding in a patient? A. Platelets count of 250000mm3 B . international normalized ratio of 1.2 C.hemoglobin level of 15gl/dl

The correct answer is B.

B. international normalized ratio of 1.2

Here's why:

1. Platelets count of 250000mm³: A normal platelet count typically ranges from 150,000 to 450,000 per mm³. A count of 250,000 mm³ is within the normal range and does not indicate an increased risk of bleeding.
2. International Normalized Ratio (INR) of 1.2: The INR measures how long it takes for blood to clot. A normal INR for a healthy person not on anticoagulant medication is usually around 0.8 to 1.2. An INR of 1.2 is at the higher end of this normal range or slightly elevated, indicating a mild prolongation of clotting time. While not critically high, it suggests a potential increased risk of bleeding compared to an INR of 1.0, especially if the patient has other risk factors or is undergoing a procedure. Higher INR values (e.g., >3.0) are associated with a more significant bleeding risk.
3. Hemoglobin level of 15gl/dl: A normal hemoglobin level for adult males is typically 13.5-17.5 g/dL and for adult females is 12.0-15.5 g/dL. A level of 15 g/dL is within the normal range and does not indicate a risk of bleeding. (Note: "gl/dl" is likely a typo for "g/dL").

Therefore, an INR of 1.2 is the only value among the options that indicates a potential (even if mild) increased risk of bleeding.