TEST DIRECTORY... | MIDx Labs

URINE PROTEIN / CREATININE RATIO (PCR)

Quantifies urinary protein loss relative to urine concentration, used to evaluate suspected kidney disease.

LIS PANEL CODE: (MID) PCR

INDIVIDUAL LIS TEST CODES INCLUDED WITHIN PANEL: UPRO, CREAU

CPT CODE: 84156 (uPRO) + 82570 (uCREA)

ALIASES: PCR, Urine Protein to Creatinine Ratio, Total Urine Protein

METHODOLOGIES: Benzethonium Chloride, Kinetic Alkaline Picrate

SPECIMEN:

- Type: Urine

- Container: Urine Container (Plain Yellow/Speckled Top)

- Minimum Volume Required: 1 mL

- Storage/Handling: Maintain specimen at room temperature, in the refrigerator, or in the freezer until testing can be performed.

- Stability:

Room Temperature (20-25 °C): 1 day

Refrigerated (2-8 °C): 3 days

Frozen (-20 °C or colder): 2 weeks; avoid multiple freeze/thaw cycles.

- Turnaround Time: 24 hours from receipt.

Special Instructions: N/A

REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

REFERENCE RANGES:

Males & Females >= 1 year of age:

Total Protein, Urine (uPRO): Not Established (mg/dL)

Reference intervals have not been established. Results should be interpreted in conjunction with clinical findings.

Creatinine, Urine (uCREA): Not Established (mg/dL)

Reference intervals are not established for isolated urine creatinine results. Interpret in conjunction with MALB / Creatinine or uPRO / Creatinine ratios and clinical context.

uPRO / Creatinine Ratio (PCR): < 150 (mg/g)

Calculated using the following formula: (UPRO / CREAU) * 1000