How is a urine sample collected for an immunofixation test?

Updated: Jul 29, 2019
  • Author: Anastasios Dimou, MD; Chief Editor: Eric B Staros, MD  more...
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Sample: 24-hour urine collection, concentrated

Collection in a container: A plastic collection container is used. The patient urinates each time into a clean dry vessel and then pours the urine in the plastic container, which is kept at a cold temperature (eg, in the refrigerator).

Technique: Collection starts early in the morning after the first morning urine has been voided and continues for the subsequent 24 hours, including the first morning urine of the following day.

Sample size: Every drop of urine within 24 hours is included in the sample.

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