Author PeaceHealth Laboratories
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||3-7 days after setup at PeaceHealth Laboratories reference lab
|Specimen Collection Details
||24-hour urine. Refrigerate during collection, handling, and transport.
||Mix well, add 1g boric acid/100 mL urine, adjust pH with boric acid to 5.0-7.0 and freeze. Record total volume, collection time, and pH on requisition.
||With preservative, 4 hours ambient or 7 days refrigerated. Unpreserved, 30 days frozen.
||12 mL urine
||Random specimens are acceptable, but are reported as mg/L and have no reference interval. Specimens refrigerated without preservatives are acceptable.
||Alkali preservatives, e.g., specimen previously preserved with NaOH.