LABORATORY TESTS TOR BILIRUBIN
The van den Bergh reaction is the most commonly used test for bilirubin in biological fluids. When carried out in an aqueous medium, the test shows a colored reaction only with watersoluble bilirubin derivatives (called the direct van den Bergh fraction). The addition of methanol enables a colored reaction to take place with water-insoluble bilirubin (called the indirect van den Bergh fraction). Direct and indirect van den Bergh fractions provide clinically useful estimations of conjugated and unconjugated bilirubin, respectively, but the correlation is only a rough approximation in that levels of conjugated bilirubin are overestimated by the direct reaction. Norma1 plasma actually contains only unconjugated bilirubin.
Qualitative estimation of bilirubin in urine is carried out with Ictotest tablets or dipsticks, which are positive in cases of conjugated hyperbilirubinemia.
- Pathology
- Classification or Glomerular Diseases
- Important NEPHROTOXIRIS
- Outcome and Prognosis
- Phenytoin
- Ovarian Cancer
- EFFECTORS OF THE RESPIRATORY SYSTEM
- NAUSEA AND VOMITING
- Management
- PENETRATING TRAUMA
- Amyloidosis
- TREATMENT
- Hematopoietic System
- TESTS OF HEPATIC FUNCTION
- CLINICAL APPROACH TO LIVER DISEASE
- Reduction in GFR
- Women’s Health Program
- THE AIRWAY STRUCTURE
- CHIP Perinatal Coverage
- Gastrointestinal Tract
- RISK FACTORS
- OTHER ESOPHAGEAL DISORDERS
- MEDIASTINITIS
- Focal Glomerular Sclerosis (FQS)
- HHSC Legislative Appropriations Request (LAR)
- NONATHEROSCLEROTIC CAUSES OF CORONARY ARTERY OBSTRUCTION
- PERFUSION
- Lower GI Bleeding
- GASTROESOPHAGEAL REFLUX DISEASE
- LIVER ABSCESS
- Nephritic Glomerulopathies
- THE ZOLLINGER-ELLISON SYNDROME
- AV JUNCTIONAL RHYTHM DISTURBANCES
- Renal Artery Occlusion
- PNEUMOTHORAX