<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1409-0015</journal-id>
<journal-title><![CDATA[Medicina Legal de Costa Rica]]></journal-title>
<abbrev-journal-title><![CDATA[Med. leg. Costa Rica]]></abbrev-journal-title>
<issn>1409-0015</issn>
<publisher>
<publisher-name><![CDATA[Asociación Costarricense de Medicina Forense]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-00152016000100190</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El laboratorio clínico en el diagnóstico de la enfermedad renal crónica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvajal Carvajal]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital de Guápiles  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<volume>33</volume>
<numero>1</numero>
<fpage>190</fpage>
<lpage>196</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-00152016000100190&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-00152016000100190&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-00152016000100190&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La Enfermedad renal crónica (CKD) se define como la presencia de anormalidades en la estructura o función renal por más de tres meses y es normalmente detectada utilizando la GFR estimada y/o la albuminuria. La tasa de filtración glomerular (GFR) es considerada como el mejor indicador de la función renal en la práctica clínica y su medición utilizando el aclaramiento urinario o plasmático de marcadores de filtración exógenos se considera el estándar de oro. En la práctica clínica la medición del GFR por estos métodos no es práctica y es costosa. Debido a eso el aclaramiento de creatinina es ensayado normalmente utilizando diferentes ecuaciones: MDRD y CKD-EPI. La ecuación CKD-EPI creatinina-cistatina para estimar la GFR muestra mejor desempeño que las otras ecuaciones que solo usan creatinina o cistatina por separado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Chronic kidney disease (CKD) is defined as abnormalities of kidney structure or function for more than three months and it is usually detected using estimated GFR and/ or albuminuria. Glomerular filtration rate (GFR) is accepted as the best indicator of kidney function in clinical practice, and its measurement using urinary or plasma clearence of exogenous filtration markers is considered the gold standard. In clinical practice, measuring GFR by these methods is impractical and expensive. Therefore creatinine clearence is usually assessed by differents equations: MDRD and CKD-EPI. GFR-estimating equation CKD-EPI creatininecystatin shows better performance than other equations using creatinine or cystatin alone.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Enfermedad renal crónica]]></kwd>
<kwd lng="es"><![CDATA[Creatinina]]></kwd>
<kwd lng="es"><![CDATA[Cistatina C]]></kwd>
<kwd lng="es"><![CDATA[Tasa de filtración glomerular]]></kwd>
<kwd lng="en"><![CDATA[Chronic kidney disease]]></kwd>
<kwd lng="en"><![CDATA[Creatinine]]></kwd>
<kwd lng="en"><![CDATA[Cystatin C]]></kwd>
<kwd lng="en"><![CDATA[Glomerular filtration rate]]></kwd>
</kwd-group>
</article-meta>
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