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Aldosterone, Urine

Mnemonic:    [U24 Aldost]
Name:    Aldosterone, Urine
Specimen:    4 mL aliquot from a 24 hour urine collection. Refrigerate during collection. Refrigerate during collection.
Minimum Spec:    0.5 mL
Transport Temp:    FREEZE
Spec Stability:    Stable 2 hours ambient.
Ref Lab/Code:    ARUP 0070480
  Method:    Quantitative Radioimmunoassay
Processing Info:    Preserved urine if the pH of the specimen is adjusted to 2-4 with 6M HCl or 50 percent acetic acid or unpreserved urine if frozen immediately after collection.

If not preserved the sample is only stable 2 hours.

Record total volume and collection time of urine on sample aliquot and packing list.

Collection instructions for a 24 hour urine sample