Question 25

Blood culture is the test performed to identify bacteremia.

Bacteremia is the presence of bacteria in the bloodstream, and blood cultures are the standard test used to detect this condition. They involve taking samples of blood and incubating them to see if any bacteria grow, which confirms the presence of infection.

A) Glucose tolerance test

The glucose tolerance test is used to diagnose diabetes or insulin resistance, not bacterial infections. It measures the body's response to sugar and is unrelated to detecting bacteremia.

B) Peripheral blood smear

A peripheral blood smear involves examining blood cells under a microscope and can provide information about certain blood disorders. However, it is not specifically designed to detect the presence of bacteria in the bloodstream.

C) Blood culture

Blood culture is the definitive test for identifying bacteremia. It allows for the growth and identification of bacteria present in the blood, making it essential for diagnosing infections that have entered the bloodstream.

D) Lactic acid

Lactic acid levels in the blood can indicate tissue hypoxia or sepsis but do not directly identify the presence of bacteria. Elevated lactic acid may suggest an ongoing infection, but it is not a diagnostic test for bacteremia.

Conclusion

Blood culture is the only option that specifically tests for the presence of bacteria in the bloodstream, making it the correct answer for identifying bacteremia. Other options either relate to different medical conditions or do not directly test for bacterial infection, which highlights their inapplicability in this context.