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Which of the following results of a urine culture would confirm a diagnosis of a urinary tract infection?

A. Bacteria count less than 50,000 bacteria per milliliter or cubic centimeter of urine
B. Bacteria count greater than 50,000 bacteria per milliliter or cubic centimeter of urine
C. Bacteria count less than 100,000 bacteria per milliliter or cubic centimeter of urine
D. Bacteria count greater than 100,000 bacteria per milliliter or cubic centimeter of urine


Sagot :

To diagnose a urinary tract infection (UTI), a urine culture test is often performed. The test measures the number of bacteria present in the urine. Let's analyze the given options to identify which one confirms a UTI diagnosis:

1. Bacteria count less than 50,000 bacteria per milliliter or cubic centimeter of urine: A count under 50,000 bacteria per milliliter typically indicates an absence of infection or a very mild case not generally considered diagnostic for UTI.

2. Bacteria count greater than 50,000 bacteria per milliliter or cubic centimeter of urine: While a count above 50,000 may suggest an infection, it is not the definitive threshold usually used for diagnosis.

3. Bacteria count less than 100,000 bacteria per milliliter or cubic centimeter of urine: Similar to option 1, a count below 100,000 bacteria per milliliter generally would not confirm a UTI. This might be associated with contamination or non-significant bacterial presence.

4. Bacteria count greater than 100,000 bacteria per milliliter or cubic centimeter of urine: A count exceeding 100,000 bacteria per milliliter of urine is a commonly accepted benchmark for confirming a UTI. This level typically indicates that the bacterial growth is significant enough to cause an infection.

Based on this analysis, the correct result for confirming a diagnosis of a urinary tract infection is:

Bacteria count greater than 100,000 bacteria per milliliter or cubic centimeter of urine.

Hence, the correct answer is:

Option 4: bacteria count greater than 100,000 bacteria per milliliter or cubic centimeter of urine.