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HelpTest Code RPTU1 Protein/Creatinine Ratio, Random, Urine
Specimen Required
Patient Preparation: Specimens should be collected before fluorescein is given or not collected until at least 24 hour later.
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Container/Tube: Plastic vial
Specimen Volume: 4 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
3. Invert well before taking 4 mL aliquot.
4. Do not over fill aliquot tube, 4 mL at most.
Useful For
Evaluation of renal disease
Screening for monoclonal gammopathy
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| PTCON | Protein, Total, Random, U | No | Yes |
| RATO3 | Protein/Creatinine Ratio | No | Yes |
| CRETR | Creatinine, Random, U | No | Yes |
Reporting Name
Protein/Creatinine Ratio, Random, USpecimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 30 days | ||
| Ambient | 24 hours |
Reject Due To
| All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
≥18 years: <0.18 mg/mg creatinine
Reference values have not been established for patients younger than 18 years of age.
Specimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84156
82570
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| RPTU1 | Protein/Creatinine Ratio, Random, U | 87434-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| PTCON | Protein, Total, Random, U | 2888-6 |
| CRETR | Creatinine, Random, U | 2161-8 |
| RATO3 | Protein/Creatinine Ratio | 2890-2 |
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 dayForms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.