Question

URINE ANALYSIS: COLONY COUNT DETERMINATION #BACTERIA PER BACTERIAL COUNT PER MILILETER 10 ul Loop Normal value (no UTI) Calculate and submit by email? If the plate has 9 CFU Acceptable (no UTI) Indeterminate <10,000 CFU per milliliter do to skin contamination during collection) 10,000-100,000 CFU per milliliter (most times treated as an infection based on patient symptoms. >100,000 CFU per milliliter Calculate and submit by email? If the Plate has 10 CFU Urinary Tract infection Calculate and submit by email? If the Plate has 100CFU

i need help with colume 3 calculations

Answer 1

1) If plate has 9 CFU

Since there are 9 CFU per 10 μL loop.

And 10 μL = 0.01 mL ( as 1 mL = 1000 μL)

Therefore 1 millilitre will contain 100 times the CFU in 10 microlitre.

CFU per mL = 9 x 100 = 900

2) If plate has 10 CFU

Since there are 10 CFU per 10 μL loop.

So similarly, CFU per mL = 10 x 100 = 1,000

3) If plate has 100 CFU

Since there are 100 CFU per 10 μL loop.

So similarly, CFU per mL = 100 x 100 = 10,000

Hence the correct answer for three parts are 900, 1000 and 10,000 respectively.

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