Displaying articles by tag: Chemical Examination of Urine

Dayyal Dg. in Clinical Pathology
Thursday, 10 August 2017 18:29

CHEMICAL EXAMINATION OF URINE

The chemical examination is carried out for substances in urine are listed below: Proteins Glucose Ketones Bilirubin Bile salts Urobilinogen Blood Hemoglobin Myoglobin Nitrite or leukocyte esterase PROTEINS Normally, kidneys excrete scant amount of protein in urine (up to 150 mg/24 hours). These proteins include proteins from plasma (albumin) and…

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Dayyal Dg. in Clinical Pathology
Wednesday, 09 August 2017 19:34

TEST FOR DETECTION OF BILE SALTS IN URINE

Bile salts are salts of four different types of bile acids: cholic, deoxycholic, chenodeoxycholic, and lithocholic. These bile acids combine with glycine or taurine to form complex salts or acids. Bile salts enter the small intestine through the bile and act as detergents to emulsify fat and reduce the surface…

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  • Test for Detection of Bile Salts in Urine
  • Surface Tension Test in Urine
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Dayyal Dg. in Clinical Pathology
Wednesday, 09 August 2017 07:21

TEST FOR DETECTION OF BILIRUBIN IN URINE

Bilirubin is converted to non-reactive biliverdin on exposure to light (daylight or fluorescent light) and on standing at room temperature. Biliverdin cannot be detected by tests that detect bilirubin. Therefore fresh sample that is kept protected from light is required. Findings associated with bilirubinuria are listed below. Jaundice Urine color:…

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  • Test for Detection of Bilirubin in Urine
  • Diseases and Disorders
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Dayyal Dg. in Clinical Pathology
Monday, 07 August 2017 13:11

TESTS FOR DETECTION OF KETONES IN URINE

The proportion of ketone bodies in urine in ketosis is variable: β-hydroxybutyric acid 78%, acetoacetic acid 20%, and acetone 2%. No method for detection of ketonuria reacts with all the three ketone bodies. Rothera’s nitroprusside method and methods based on it detect acetoacetic acid and acetone (the test is 10-20…

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  • Chemical Examination of Urine
  • Test for Detection of Ketones in Urine
  • Diseases and Disorders
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Dayyal Dg. in Clinical Pathology
Monday, 07 August 2017 08:36

TESTS FOR DETECTION OF PROTEINURIA

1. HEAT AND ACETIC ACID TEST (BOILING TEST)   This test is based on the principle that proteins get precipitated when boiled in an acidic solution.   Method   Urine should be clear; if not, filter or use supernatant from a centrifuged sample.   Urine should be just acidic (check…

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  • Tests for Detection of Protein in Urine
  • Diseases and Disorders
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Dayyal Dg. in Clinical Pathology
Saturday, 05 August 2017 18:28

TESTS FOR DETECTION OF GLUCOSE IN URINE

1. COPPER REDUCTION METHODS A. Benedict’s qualitative test: When urine is boiled in Benedict’s qualitative solution, blue alkaline copper sulphate is reduced to red-brown cuprous oxide if a reducing agent is present (Figure 820.1). The extent of reduction depends on the concentration of the reducing substance. This test, however, is…

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  • Tests for Detection of Glucose in Urine
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