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Test Code 24PO4 Phosphate, urine, 24 hr

Additional Codes

Epic Ordering Code LAB426
NBS code LBC04788
Service code 31402

Specimen Requirements

Submit the following:

Container:
24 Hr Urine Container

Preservative types accepted: No preservative, Thymol

Submit cumulative 24-hour urine collection, or a 20 mL aliquot from the completed collection. For aliquots, record the total 24-hour urine volume on the bottle.

 

NUH Outreach: Submit a 20 mL aliquot from the completed 24-hour collection. Record the total 24-hour urine volume on the aliquot bottle.

Processing Requirements

Centrifuge sample before analysis.

Specimen type: 24hr Urine

Specimen Stability

Specimen Type 24 hr urine
Ambient 2 days
Refrigerate Not available
Frozen Not available

Specimen Condition

Haemolysis Not applicable
Icterus Not applicable
Lipaemia Not applicable
Others: Refrigerated or frozen Reject

Methodology

Colorimetry

Days and Times Performed

24 hrs, TAT 1 day

Reference Interval

12.9 – 42.0 mmol/day

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346

Useful For

Assessment of calcium and phosphate disorders.

LOINC Code Information

Urine volume, total 3167-4
Phosphate, urine 13539-2
Phosphate, urine, 24 hr 25973-9

Alias

24PO4

Update

Last updated 31/07/2026