Creatinine, Urine 24 hour

Specimen Required

urine in a 24 urine container labeled with 2 patient identifiers (name and DOB)

Specimen Minimum Volume

Submit entire collection

Specimen Stability Information

Keep specimen refrigerated during collection and transport as soon as possible to the Laboratory.

Special Instructions

– 24 hour urine containers can be obtained from the Laboratory. No preservative is required; however, boric acid and 6N Hydrochloric acid are acceptable preservatives. n- Collecting a 24 hour urine sample: n 1. To start the collection, empty bladder and discard this specimen. This will be the start of the collection period. Write the date and time on the collection container. n 2. DO NOT VOID directly into the container. Void into a clean container and then pour the specimen into the 24 container. Keep the container refrigerated during the collection period. n 3. At precisely the same time that the collection was started 24 hours earlier, empty bladder one final time and add this specimen to the 24 hour collection container. n 4. Deliver container to the Laboratory.

Performing Laboratory

As ordered. Turn around time is 4 hours.

Reference Values

Male: 1040-2350 mg/24 hours nFemale: 740-1570 mg/24 hours