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  2. Van den Bergh reaction - Wikipedia

    en.wikipedia.org/wiki/Van_den_Bergh_reaction

    This test helps to identify the type of jaundice. The serum of the patient is mixed with diazo reagent. If a red colour develops immediately it is called a direct positive. It happens if conjugated bilirubin is present. In an indirect positive test, the patient's serum is first treated with alcohol and later mixed with diazo reagent.

  3. Bilirubin - Wikipedia

    en.wikipedia.org/wiki/Bilirubin

    Total bilirubin assays work by using surfactants and accelerators (like caffeine) to bring all of the different bilirubin forms into solution where they can react with assay reagents. Total and direct bilirubin levels can be measured from the blood, but indirect bilirubin is calculated from the total and direct bilirubin. [citation needed]

  4. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

  5. List of reagents - Wikipedia

    en.wikipedia.org/wiki/List_of_reagents

    Reagents are "substances or compounds that are added to a system in order to bring about a chemical reaction or are added to see if a reaction occurs." [1] Some reagents are just a single element. However, most processes require reagents made of chemical compounds. Some of the most common ones used widely for specific reactive functions are ...

  6. Gmelin's test - Wikipedia

    en.wikipedia.org/wiki/Gmelin's_test

    Gmelin's test is a chemical test used for detecting the presence of bile pigments in urine. It is named after Leopold Gmelin, who introduced the test. [1] [2] [3] Five millilitres of urine is slowly added to five millilitres of concentrated nitric acid in a test-tube. Different coloured rings between the two layers are visible if bile pigments ...

  7. Ehrlich's reagent - Wikipedia

    en.wikipedia.org/wiki/Ehrlich's_reagent

    Ehrlich's reagent or Ehrlich reagent is a reagent containing p-dimethylaminobenzaldehyde (DMAB) and thus can act as an indicator to presumptively identify indoles and urobilinogen. Several Ehrlich tests use the reagent in a medical test ; some are drug tests and others contribute to diagnosis of various diseases or adverse drug reactions .

  8. Azobilirubin - Wikipedia

    en.wikipedia.org/wiki/Azobilirubin

    Azobilirubin can also be used to determine how much conjugated bilirubin is the blood compared to that of unconjugated bilirubin. This process is done by using both forms of bilirubin alongside a diazo reagent and a caffeine-benzoate reagent.

  9. Category:Analytical reagents - Wikipedia

    en.wikipedia.org/wiki/Category:Analytical_reagents

    Download as PDF; Printable version; ... out of 31 total. This list may not reflect recent changes. A. ... Mecke reagent; Melzer's reagent; Murexide test; R. Reagent ...