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Nitrogen, Total, Urine

CPT Code(s): 84999
Specimen Required: Patient Preparation:
Collect:24-hour urine.
Specimen Preparation:Transfer 10 mL aliquot from a well-mixed 24-hour urine collection to RDL Standard Transport Tubes. (Min: 2 mL) Do not use preservatives.
Storage/Transport Temperature:Refrigerated. Also acceptable: Room temperature or frozen.
Stability:Ambient: 1 week; Refrigerated: 1 week; Frozen: 3 years
New York DOH Approval Status: This test is New York DOH approved.
Aliases:
  • Nitrogen BalanceTotal Urinary Nitrogen
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