C-reactive protein in urine

Norm
CRP in urine 0–5 µg/l
Ratio CRP_urine/CRP_serum 0.9–1.1

Synonyms: C-reactive protein, CRP, CRP, C-reactive protein.
Urine
Urine container

C-reactive protein (CRP) – a classic indicator of inflammation activity in serum. Determining the ratio of CRP in serum and urine (together with determining the concentration of α₁-microglobulins) is used to evaluate renal function in kidney transplantation.

Increase
• Sometimes – impending rejection of a kidney transplant;
• Secondary amyloidosis;
• High-grade proteinuria;

Decrease in the ratio CRP_urine/CRP_serum
• Glomerular proteinuria

Increase in the ratio CRP_urine/CRP_serum
• Bacterial infection.

Source | Handbook of Basic Laboratory Tests | Doctor of Medical Sciences Gintaras Zaleskis