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* Protein/Creatinine Ratio, Urine

Mnemonic

U TP/CR

Synonym

Urine Protein - Urine Creatinine - Urine Protein Random - Protein, Urine, Random

Includes

Urine Protein, Urine Creatinine, Urine Protein to Creatinine Ratio

Specimen Collection Requirements

Collect

Urine, one sterile container without preservatives. First morning void is preferred.

Supply Item Number - 135327

Also acceptable: Timed urine collection without preservatives, refrigerate during collection. 

Handling

Remove particulates by centrifugation prior to analysis.

Preferred Volume

2.0 mL Urine

Minimum Volume

0.5 mL Urine

Transport

Refrigerated (2-8°C)

Rejection Criteria

Samples with gross hemolysis or preservatives. Samples obtained through catheters used to infuse hyperalimentation fluid. Samples collected using cotton balls.

Stability

Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 72 hours; Frozen (≤-20°C): 28 days

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Colorimetry

Reference Values

Reference Values

≤ 0.200 mg/mgCR

Comments

In order to convert from mg/mgCR to mg/gCR, multiply result by 1000.

CPT Codes

Urine Protein: 84156, Urine Creatinine: 82570

Last Updated: Monday, September 30, 2019 11:45:28 PM


Client Services: 503-413-1234