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PTD - 310

Test Directory - Urine Total Protein : Creatinine Ratio

Synonyms

UTPR, PCR

Clinical Indications

Investigation, assessment and monitoring of chronic kidney disease (NICE guidance CG107).

Assessment of pre-eclampsia in pregnancy (Nice guidance CG62)

Urine Total Protein:Creatinine Ratio (UTPR) has replaced 24hr Urine Total Protein except in a minority of patients under the care of renal and obstetric physicians.

Request Form

Combined Pathology Blood form (Yellow/Black)

Availability

On request.

Specific Criteria

None.

Turnaround Time

Same day

Specimen

Early morning urine preferred

Volume

2 ml

Container

White Capped Universal

Causes for Rejection

Unlabelled sample.

Reference Range

Normal: less than 15 mg/mmoL

Interpretation

Local renal (CKD) guidelines.
Routine referral - UTPR >=100 mg/mmoL or >=50 mg/mmoL with microscopic haematuria.
Urgent referral - Heavy proteinuria (>=300 mg/mmol) with low serum albumin (nephrotic syndrome).

Assessment of proteinuria in pregnancy: significant proteinuria is defined as UTPR > 30 mg/mmol. If patient is diabetic then a 24hr urine collection to assess severity of proteinuria is recommened.

Lab Handling

 

Processing: Test code UTPR. Aliquot into AU tube with a urine barcode (6 prefix). Centrifuge the aliquot then run on Cobas line.
Primary sample and aliquot stored at
4C in the cold room (CB23) after analysis.


Version 1.0 / July 2014                                                                                                            Approved by: Consultant Biochemist