Protein (urine)

Background

Total protein concentration, preferably in 24-hour urine, aids in the detection of proteinuria. Proteinuria may be caused by renal impairment, systemic overload, or postrenal diseases. As well as 24 hour urine excretion of protein, some clinicians may request a protein : creatinine ratio (PCR).

Reference ranges

24 hour Urine Protein: < 0.15 g/24hours
Protein/creatinine ratio: < 20 mg protein/mmol creatinine

Specimen requirements

Sample type:

• Random urine in a plain, white topped universal container.
• 24 hour urine in a plain 24 hour urine collection bottle

Sample identification:

• Three patient identifiers from
  • Name
  • D.O.B.
  • Address
  • N.H.S. number
  • Unit Number
  should match on the specimen and request form. This check may be performed prior to centrifugation by the Central Sort department.

Turnaround time

2 hours