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Phosphorus, Urine

Mnemonic:    [U Phos]
Name:    Phosphorus, Urine
Specimen:    1 mL urine from a random collection.
Spec Stability:    Stable 5 days refrigerated.
Reference Range:    0.4 - 1.3 G/24 hr
  Method:    Colorimetric Molybdate
Note:    This test does not require a preservative during collection. Once the specimen is received in the lab an aliquot should be adjusted to pH 1.5 - 5.0, then centrifuged.

Collection instructions for a 24 hour urine sample