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The direct and indirect Coombs tests, also known as antiglobulin test ( AGT ), are blood tests used in immunohematology. The direct Coombs test detects antibodies that are stuck to the surface of the red blood cells. [1] Since these antibodies sometimes destroy red blood cells they can cause anemia; this test can help clarify the condition.
Fern test. Positive fern test with amniotic fluid as seen under the microscope. The fern test is a medical laboratory test used in obstetrics and gynecology. The name refers to the detection of a characteristic " fern like" pattern of vaginal secretions when a specimen is allowed to dry on a glass slide and is viewed under a low-power microscope.
The Wassermann test or Wassermann reaction ( WR) [1] is an antibody test for syphilis, named after the bacteriologist August Paul von Wassermann, based on complement fixation. It was the first blood test for syphilis and the first in the nontreponemal test (NTT) category. Newer NTTs, such as the RPR and VDRL tests, have mostly replaced it.
The Rivalta Test is a simple, inexpensive method that can be used in resource-limited settings to differentiate a transudate from an exudate. [1] It is a simple, inexpensive method that does not require special laboratory equipment and can be easily performed in private practice. The test was originally developed by the Italian researcher ...
The circular shape is known as a wheal response. The Mantoux test or Mendel–Mantoux test (also known as the Mantoux screening test, tuberculin sensitivity test, Pirquet test, or PPD test for purified protein derivative) is a tool for screening for tuberculosis (TB) and for tuberculosis diagnosis. It is one of the major tuberculin skin tests ...
Ames test procedure. The Ames test is a widely employed method that uses bacteria to test whether a given chemical can cause mutations in the DNA of the test organism. More formally, it is a biological assay to assess the mutagenic potential of chemical compounds. [1] A positive test indicates that the chemical is mutagenic and therefore may ...
CAMP test is shown at bottom left. The CAMP test (Christie–Atkins–Munch-Peterson) is a test to identify group B β-hemolytic streptococci ( Streptococcus agalactiae) [1] [2] based on their formation of a substance (CAMP factor [3]) that enlarges the area of hemolysis formed by the β- hemolysin elaborated from Staphylococcus aureus.
Schick test. A boy receives an injection of diluted toxin for the Schick test in 1915. Purpose. susceptibility to diphtheria. A positive reaction. The Schick test, developed in 1913, [1] is a skin test used to determine whether or not a person is susceptible to diphtheria. [2] It was named after its inventor, Béla Schick (1877–1967), a ...