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Five milliliters of 5% alcohol are added to 5 mL of urine. Two milliliters of this solution is diluted to 50 mL with wat...

Five milliliters of 5% alcohol are added to 5 mL of urine. Two milliliters of this solution is diluted to 50 mL with water, and 5 mL of this are used for analysis. How many milliliters of urine are in the analysis sample?

You are doing a procedure that calls for 5 mL of undiluted urine. You use 3 mL of a 1/5 dilution of urine instead. The answer obtained is 50 mg/dL. What result should be reported?

A procedure indicates that color development should be carried out on a 5 mL aliquot of a 1/20 dilution of serum. Due to a laboratory accident, only 4 mL of the well mixed 1/20 dilution is available for analysis. One milliliter of water is added to the 4 mL of the 1/20 dilution to obtain a volume of 5 mL. This unknown gave an answer of 10 mg/dL. What is the concentration of the unknown?

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