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Specimen Collection Manual and Test Catalog

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PROTEIN/ CREATININE RATIO, URINE

Geisinger Epic Procedure Code:  LAB2941    Geisinger Epic ID:  23483

SPECIMEN COLLECTION
Specimen type: 

Random urine


Preferred collection container: 
Specimen required: 

5 mL aliquot urine; minimum 1 mL



SPECIMEN PROCESSING
Transport temperature: 

Refrigerated.


Specimen stability: 

Refrigerated: 6 days. Frozen: 1 month.


Rejection criteria: 

Urine containing preservatives is not acceptable.



TEST DETAILS
Interpretation guide: 

Normal: <150 mg/g creatinine 
High: 150-500 mg/g creatinine 
Very High: >500 mg/g creatinine 
Nephrotic: >3000 mg/g creatinine


CPT code(s):  84156, 82570
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Urine protein, urine creatinine, protein/creatinine ratio.


Methodology: 
Benzethonium chloride (Protein)
Enzymatic (Urine Creatinine)
Synonyms: 

PRCRUB, PROT/CREAT UR RATIO


Clinical significance: 

Proteinuria is characteristic of renal disease, and concentrations may be increased with diabetes, hypertension, nephritic syndrome, and drug nephrotoxicity.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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