The normal range of protein in urine is quite low. Different methods of testing yield slightly different normal ranges.
Urine Protein Levels: A Summary of Normal Ranges
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Random Urine Sample: A normal result for a random urine sample typically shows 0 to 14 mg/dL of protein. [Mount Sinai, Testing.com, WebMD]
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24-Hour Urine Collection: For a more comprehensive assessment, a 24-hour urine collection usually shows a normal value of less than 80 mg per 24 hours. [Mount Sinai, Testing.com]
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Daily Limit: Another common reference point states that a normal amount of protein in urine is less than 150 milligrams per day. [UpToDate, Cleveland Clinic, Healthline]. This figure encompasses various proteins normally found in small quantities. [Testing.com]
It is important to remember that these are general ranges, and normal values may vary slightly depending on the laboratory conducting the test. Always refer to the specific reference range provided by your healthcare provider or laboratory.
What Does Elevated Protein in Urine Mean?
While small amounts of protein are expected, consistently higher levels (proteinuria) can signal underlying health problems, most notably kidney disease. Further investigation is required if your protein levels are above the normal ranges.
