Protein (urine)

Alternative names, keywords

Samples required

24 hour urine collection in plain container.

Instructions for 24h urine collection available here or on UHSussex public site.

See also protein: creatinine ratio.

Test indications

Factors affecting test performance/ results

Haemoglobin interferes.

Levodopa, methyldopa and Na₂-cefoxitin cause artificially high total protein results at the therapeutic drug level. Phenazopyridine and calcium dobesilate cause artificially low protein results at the therapeutic drug level.

Patient samples containing > 8 g/L of organically bound iodine from radiopaque media (e.g. Hexabrix) may have falsely elevated results.

In alkaptonuria, homogentisic acid in urine samples at concentrations > 0.6 mmol/L can cause false results.

The administration of gelatin-based plasma replacements can lead to increased urine protein values.

Results should always be assessed in conjunction with the patient’s medical history, clinical examination and other findings.

Reference range

< 140 mg/24h
_{Source: Roche Cobas^®  Urine Total Protein kit insert, 2024-06, V10.0}

Turnaround time

Same day

Enquiries

Biochemistry (Automation)