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Test Code RATO2 Protein/Creatinine, Random, Urine


Specimen Required


Only orderable as part of a profile. For more information see ORTHP / Orthostatic Proteinuria, Random, Urine.


Useful For

Calculation of total protein concentration per creatinine concentration

Method Name

Only orderable as part of a profile. For more information see ORTHP / Orthostatic Proteinuria, Random, Urine.

 

Calculation

Reporting Name

Protein/Creatinine Ratio

Specimen Type

Urine

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  24 hours

Reference Values

Only orderable as part of a profile. For more information see ORTHP / Orthostatic Proteinuria, Random, Urine.

 

≥18 years: <0.18 mg/mg creatinine

Reference values have not been established for patients younger than 18 years of age.

Interpretation

First-morning urine protein-to-creatinine ratio below 0.20 mg/mg creatinine supports the diagnosis of orthostatic proteinuria, while a result above 0.20 mg/mg creatinine does not support this diagnosis.

 

Further investigation into other etiologies for proteinuria may be warranted.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 day

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

LOINC Code Information

Test ID Test Order Name Order LOINC Value
RATO2 Protein/Creatinine Ratio 2890-2

 

Result ID Test Result Name Result LOINC Value
RATO2 Protein/Creatinine Ratio 2890-2