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Medicina Legal de Costa Rica

On-line version ISSN 2215-5287Print version ISSN 1409-0015

Abstract

CARVAJAL-CARVAJAL, Carlos. Proteinuria y microalbuminuria. Med. leg. Costa Rica [online]. 2017, vol.34, n.1, pp.194-201. ISSN 2215-5287.

The glomerular filtration barrier is made up of three layers: the fenestrated endothelium, the glomerular basement membrane and the specialized epitelial cells, podocytes. The final urine protein content is very low and consists primarily of plasma albumin and other proteins. Perturbation of the components of the filtration barrier can results in the clinical proteinuria. Proteinuria usually reflects an increase in glomerular permeability for albumin and other proteins. There are several types of proteinuria.

Urine albumin/creatinine ratio (ACR) and protein/creatinine (PCR) are important markers of kidney damage,

However several management guidelines recommend identification and quantification of proteinuria using ACR in preference to PCR. In addition, some guidelines recommend repeating ACR measurements for initial identification of albuminuria to avoid over diagnosis due to transient albuminuria changes.

Keywords : albuminuria; glomerular filtration barrier; proteinuria; microalbuminuria.

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