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Protein in urine and CSF

Protein in urine and CSF - Spinreact

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PROTEIN u&csf<br />

<strong>Prote<strong>in</strong></strong> <strong>in</strong> ur<strong>in</strong>e <strong>and</strong> <strong>CSF</strong><br />

Pyrogallol red. Colorimetric<br />

Quantitative determ<strong>in</strong>ation of total ur<strong>in</strong>ary <strong>and</strong> <strong>CSF</strong> prote<strong>in</strong><br />

IVD<br />

Store at 2-8ºC<br />

PRINCIPLE OF THE METHOD<br />

<strong>Prote<strong>in</strong></strong>s react <strong>in</strong> acid solution with pirogallol red <strong>and</strong> molybdate to<br />

form a colored complex.<br />

The <strong>in</strong>tensity of the color formed is proportional to the prote<strong>in</strong><br />

concentration <strong>in</strong> the sample 1,2 .<br />

CLINICAL SIGNIFICANCE<br />

In healthy persons, the ur<strong>in</strong>e conta<strong>in</strong>s no prote<strong>in</strong> or only a trace<br />

amount of prote<strong>in</strong>; normally the glomeruli prevent passage of<br />

prote<strong>in</strong> from the blood to the glomerular filtrate. Glomerular <strong>in</strong>jury<br />

causes <strong>in</strong>creased permeability to plasma prote<strong>in</strong>s, result<strong>in</strong>g <strong>in</strong><br />

prote<strong>in</strong>uria, which refers to the presence of prote<strong>in</strong> <strong>in</strong> the ur<strong>in</strong>e.<br />

A persistent f<strong>in</strong>d<strong>in</strong>g of prote<strong>in</strong>uria is the s<strong>in</strong>gle most important<br />

<strong>in</strong>dication of renal disease.<br />

Elevated concentration of prote<strong>in</strong> <strong>in</strong> cerebro-sp<strong>in</strong>al fluid (<strong>CSF</strong>) can<br />

be cause by <strong>in</strong>fections <strong>and</strong> <strong>in</strong>tracranial pressure 1,5,6 .<br />

Cl<strong>in</strong>ical diagnosis should not be made on a s<strong>in</strong>gle test result; it<br />

should <strong>in</strong>tegrate cl<strong>in</strong>ical <strong>and</strong> other laboratory data.<br />

REAGENTS<br />

R<br />

PREPARATION<br />

The reagent is ready to use.<br />

STORAGE AND STABILITY<br />

Pyrogallol red<br />

Sodium molybdate<br />

50 mmol/L<br />

0.04 mmol/L<br />

All the components of the kit are stable until the expiration date on<br />

the label when stored tightly closed at 2-8ºC protected from light<br />

<strong>and</strong> contam<strong>in</strong>ations prevented dur<strong>in</strong>g their use.<br />

Do not use reagents over the expiration date.<br />

Signs of reagent deterioration:<br />

Presence of particles <strong>and</strong> turbidity.<br />

Blank absorbance (A) at 600 nm 0.30.<br />

ADDITIONAL EQUIPMENT<br />

Autoanalyzer Sp<strong>in</strong>tech 240.<br />

General laboratory equipment.<br />

SAMPLES<br />

Ur<strong>in</strong>e 24 h: Stability 8 days at 2-8ºC.<br />

Cerebrosp<strong>in</strong>al fluid (<strong>CSF</strong>): Stable 4 days at 2-8ºC.<br />

REFERENCE VALUES 5<br />

Ur<strong>in</strong>e:<br />

<strong>CSF</strong>:<br />

< 100 mg/24 h (< 150 mg/24 h <strong>in</strong> pregnancy)<br />

Children 300 -1000 mg/L<br />

Adults 150 - 450 mg/L<br />

These values are for orientation purpose; each laboratory should<br />

establish its own reference range.<br />

APPLICATION SPINTECH 240<br />

Item Name<br />

Blank parameter must be performed <strong>in</strong> order to get good results <strong>in</strong><br />

CALIB screen from ma<strong>in</strong> menu. This parameter calibration is stable for<br />

more than 40 days.<br />

QUALITY CONTROL<br />

A calibration us<strong>in</strong>g a ur<strong>in</strong>e prote<strong>in</strong> calibrator is needed (Ref.: 1002450).<br />

Each laboratory should establish its own Quality Control scheme <strong>and</strong><br />

corrective actions if controls do not meet the acceptable tolerances.<br />

NOTES<br />

PTOR<br />

DATA INFORMATION<br />

1. Calibration with the aqueous st<strong>and</strong>ard may cause a systematic<br />

error <strong>in</strong> automatic procedures. In these cases, it is recommended<br />

to use a serum Calibrator.<br />

2. Use clean disposable pipette tips for its dispensation.<br />

BIBLIOGRAPHY<br />

CALIBRATION<br />

Units mg/L TYPE L<strong>in</strong>ear<br />

Decimals 0<br />

ANALYSIS<br />

STANDARD<br />

Type END #1 * #4<br />

#2 #5<br />

W.Length 1 600 #3 #6<br />

NORMAL RANGE<br />

Method Colorimetric LOW HIGH<br />

SERUM ADULT<br />

CORR<br />

CHILDREN<br />

SLOPE INTER URINE<br />

1.000 x + 0<br />

Item Name<br />

PTOR<br />

ASPIRATION DATA PROCESS ABSORBANCE LIMIT<br />

KIND S<strong>in</strong>gle Double READ LOW -3.000<br />

START END HIGH 3.000<br />

VOLUME MAIN 50 52<br />

SAMPLE 5 L SUB<br />

REAGENT 1 250 L ENDPOINT LIMIT 3<br />

LINEAR CHECK (%)<br />

FACTOR<br />

Third Mix OFF ON Blank Correction 1.000<br />

R1 Blank Water R1-B<br />

MONITOR<br />

PROZONE CHECK<br />

0 LEVEL POINT 1 START END LIMIT (%)<br />

SPAN 3.000 FIRST<br />

SECOND<br />

Low High<br />

THIRD<br />

Low High<br />

1. Orsonneau JL et al. An improved Pyrogallol Red-Molybdate<br />

Method for Determ<strong>in</strong><strong>in</strong>g Total Ur<strong>in</strong>ary <strong>Prote<strong>in</strong></strong>. Cl<strong>in</strong> Chem 1989<br />

(35):2233-2236.<br />

2. Koller A. Total serum prote<strong>in</strong>. Kaplan A et al. Cl<strong>in</strong> Chem The C.V.<br />

Mosby Co. St Louis. Toronto. Pr<strong>in</strong>ceton 1984; 1316-1324 <strong>and</strong> 418.<br />

3. Young DS. Effects of drugs on Cl<strong>in</strong>ical Lab. Tests, 4th ed AACC<br />

Press, 1995.<br />

4. Young DS. Effects of disease on Cl<strong>in</strong>ical Lab. Tests, 4th ed AACC<br />

2001.<br />

5. Burtis A et al. Tietz Textbook of Cl<strong>in</strong>ical Chemistry, 3rd ed AACC<br />

1999.<br />

6. Tietz N W et al. Cl<strong>in</strong>ical Guide to Laboratory Tests, 3rd ed AACC<br />

1995.<br />

PACKAGING<br />

Ref: TK1001025<br />

Cont.<br />

R:10 x 35 mL<br />

TKBSIS29-I 06/07/11 SPINREACT,S.A./S.A.U. Ctra.Santa Coloma, 7 E-17176 SANT ESTEVE DE BAS (GI) SPAIN<br />

Tel. +34 972 69 08 00 Fax +34 972 69 00 99. e-mail: sp<strong>in</strong>react@sp<strong>in</strong>react.com


PROTEIN u&csf<br />

Proteínas en or<strong>in</strong>a y LCR<br />

Rojo pirogalol. Colorimétrico<br />

Determ<strong>in</strong>ación cuantitativa de proteínas totales en or<strong>in</strong>a y<br />

LCR<br />

IVD<br />

Conservar a 2-8ºC<br />

PRINCIPIO DEL MÉTODO<br />

Las proteínas presentes en la muestra reaccionan en medio<br />

ácido con el rojo pirogalol y el molibdato, form<strong>and</strong>o un complejo<br />

coloreado.<br />

La <strong>in</strong>tensidad del color formado es proporcional a la<br />

concentración de proteínas en la muestra ensayada 1,2 .<br />

SIGNIFICADO CLÍNICO<br />

La or<strong>in</strong>a de personas sanas no contiene proteínas ó sólo<br />

pequeñas cantidades; normalmente el glomérulo evita el paso de<br />

estas de la sangre al filtrado glomerular.<br />

Alteraciones glomerulares causan el aumento de la<br />

permeabilidad de las proteínas plasmáticas lo que ocasiona la<br />

prote<strong>in</strong>úria, que <strong>in</strong>dica presencia de proteínas en or<strong>in</strong>a.<br />

La presencia persistente de prote<strong>in</strong>úria <strong>in</strong>dica enfermedad renal.<br />

Concentraciones elevadas de proteínas en líquido<br />

cefalorraquídeo (LCR) pueden ser debidas a <strong>in</strong>fecciones o a<br />

presión <strong>in</strong>tracraneal elevada 1,5,6, .<br />

El diagnostico clínico debe realizarse teniendo en cuenta todos<br />

los datos clínicos y de laboratorio.<br />

REACTIVOS<br />

R<br />

PREPARACIÓN<br />

Rojo pirogalol<br />

Molibdato sódico<br />

El reactivo está listo para su uso.<br />

CONSERVACIÓN Y ESTABILIDAD<br />

50 mmol/L<br />

0,04 mmol/L<br />

Todos los componentes del kit son estables, hasta la fecha de<br />

caducidad <strong>in</strong>dicada en la etiqueta, cu<strong>and</strong>o se mantienen los frascos<br />

bien cerrados a 2-8ºC, protegidos de la luz y se evita su<br />

contam<strong>in</strong>ación. No usar reactivos fuera de la fecha <strong>in</strong>dicada.<br />

Indicadores de deterioro de los reactivos:<br />

Presencia de partículas y turbidez.<br />

Absorbancia (A) del Blanco a 600 nm 0,30.<br />

MATERIAL ADICIONAL<br />

Autoanalizador Sp<strong>in</strong>tech 240.<br />

Equipamiento habitual de laboratorio.<br />

MUESTRAS<br />

Or<strong>in</strong>a de 24 h: Estable 8 días a 2-8ºC.<br />

Liquido cefalorraquídeo (LCR): Estable 4 días a 2-8ºC<br />

VALORES DE REFERENCIA 5<br />

Or<strong>in</strong>a: < 100 mg/24 h (en mujeres embarazadas < 150 mg/24 h)<br />

Niños 300 -1000 mg/L<br />

LCR:<br />

Adultos 150 - 450 mg/L<br />

Estos valores son orientativos. Es recomendable que cada<br />

laboratorio establezca sus propios valores de referencia.<br />

APLICACIÓN AL SPINTECH 240<br />

Item Name<br />

Es necesario solicitar el blanco en este parámetro para obtener<br />

resultados correctos en la pantalla pr<strong>in</strong>cipal de CALIB. La Calibración<br />

de este parámetro es estable más de 40 días.<br />

CONTROL DE CALIDAD<br />

Es conveniente calibrar utiliz<strong>and</strong>o el Calibrador de proteínas en Or<strong>in</strong>a<br />

(Ref.: 1002450). Cada laboratorio debe disponer su propio Control de<br />

Calidad y establecer correcciones en el caso de que los controles no<br />

cumplan con las tolerancias.<br />

NOTAS<br />

PTOR<br />

DATA INFORMATION<br />

1. La calibración con el Patrón acuoso puede dar lugar a errores<br />

sistemáticos en métodos automáticos. En este caso, se recomienda<br />

utilizar calibradores séricos.<br />

2. Usar puntas de pipeta desechables limpias para su dispensación.<br />

BIBLIOGRAFIA<br />

1. Orsonneau JL et al. An improved Pyrogallol Red-Molybdate<br />

Method for Determ<strong>in</strong><strong>in</strong>g Total Ur<strong>in</strong>ary <strong>Prote<strong>in</strong></strong>. Cl<strong>in</strong> Chem 1989;<br />

35:2233-2236.<br />

2. Koller A. Total serum prote<strong>in</strong>. Kaplan A et al. Cl<strong>in</strong> Chem The C.V.<br />

Mosby Co. St Louis. Toronto. Pr<strong>in</strong>ceton 1984; 1316-1324 <strong>and</strong> 418.<br />

3. Young DS. Effects of drugs on Cl<strong>in</strong>ical Lab. Tests, 4th ed AACC<br />

Press, 1995.<br />

4. Young DS. Effects of disease on Cl<strong>in</strong>ical Lab. Tests, 4th ed AACC<br />

2001.<br />

5. Burtis A et al. Tietz Textbook of Cl<strong>in</strong>ical Chemistry, 3rd ed AACC<br />

1999.<br />

6. Tietz N W et al. Cl<strong>in</strong>ical Guide to Laboratory Tests, 3rd ed AACC<br />

1995.<br />

PRESENTACION<br />

Ref: TK1001025<br />

Cont.<br />

CALIBRATION<br />

Units mg/L TYPE L<strong>in</strong>ear<br />

Decimals 0<br />

ANALYSIS<br />

STANDARD<br />

Type END #1 * #4<br />

#2 #5<br />

W.Length 1 600 #3 #6<br />

NORMAL RANGE<br />

Method Colorimetric LOW HIGH<br />

SERUM ADULT<br />

CORR<br />

CHILDREN<br />

SLOPE INTER URINE<br />

1.000 x + 0<br />

Item Name<br />

PTOR<br />

ASPIRATION DATA PROCESS ABSORBANCE LIMIT<br />

KIND S<strong>in</strong>gle Double READ LOW -3.000<br />

START END HIGH 3.000<br />

VOLUME MAIN 50 52<br />

SAMPLE 5 L SUB<br />

REAGENT 1 250 L ENDPOINT LIMIT 3<br />

LINEAR CHECK (%)<br />

FACTOR<br />

Third Mix OFF ON Blank Correction 1.000<br />

R1 Blank Water R1-B<br />

MONITOR<br />

PROZONE CHECK<br />

0 LEVEL POINT 1 START END LIMIT (%)<br />

SPAN 3.000 FIRST<br />

SECOND<br />

Low High<br />

THIRD<br />

Low High<br />

R:10 x 35 mL<br />

TKBSIS29-E 06/07/11 SPINREACT,S.A./S.A.U.Ctra.Santa Coloma, 7 E-17176 SANT ESTEVE DE BAS (GI) SPAIN<br />

Tel. +34 972 69 08 00 Fax +34 972 69 00 99. e-mail: sp<strong>in</strong>react@sp<strong>in</strong>react.com

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