Sign in →

Test Code UUA24 Uric Acid, 24 Hour, Urine

Additional Codes

Epic: LAB841

Specimen Required

Specimen Type: Urine

Collection Container/Type

Preferred: 24-hour Urine Collection

Acceptable: Sterile container

Submission Container/Tube: Clear top (no additive)

Specimen Volume: 2 mL

Collection Instructions: 

  1. Add Sodium Hydroxide (NaOH) as preservative at start of collection.
  2. Collect a 24-hour specimen.
  3. Empty the bladder at the start of collection, this urine is discarded.
  4. Collect all urine after the initial void in the collection container.
  5. Measure and record the 24-hour volume.
  6. Record the exact start and completion times of the 24-hour collection on the container label.

Specimen Minimum Volume

1 mL

Specimen Stability

Room temperature: 4 days (if pH >8)

Refrigerated: Not defined

Frozen: Not acceptable

Reference Range

See laboratory report

Rejection Due To

Unlabeled, mislabeled, wrong tube type, large amount of free hemoglobin, and/or bilirubin,, QNS, exceeds specimen/stability requirements.

Report Available

Same day

Method Name


Day(s) Performed


Special Instructions

Patient Collection Instructions