How much patient serum is needed to make a 1 mL 1:25 dilution?                     b. If a test procedure requires that the patient serum be diluted with 7 parts of distilled water, how much diluent should be used if the required serum volume is 250 µL? What is the final volume and dilution factor of the solution?                     c. How much NaCl in grams and distilled water is needed to make 10 mL of 0.9% NaCl solution?

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