direct fluorescent antibody

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Related to direct fluorescent antibody: FA test

direct fluorescent antibody

Abbreviation: DFA

A fluorescent antibody test performed on sputum to detect microorganisms that invade the respiratory tract, e.g., Legionella, Mycoplasma, or Bacillus anthracis.

Synonym: direct fluorescein-conjugated antibody; direct immunofluorescence test

See also: antibody

References in periodicals archive ?

Influenza can be confirmed by various methods, including commercially available rapid tests, viral culture, direct fluorescent antibody, reverse transcriptase polymerase chain reaction, IHC of tissues collected during autopsy (3), and paired serology.

Update: influenza-associated deaths reported among children aged <18 years--United States, 2003-04 influenza season

87271: Infectious agent antigen detection by immunofluorescent technique; cytomegalovirus, direct fluorescent antibody (DFA)

POL Symposium helps physicians become CLIA-certified lab directors. (POL Adviser)

The nuchal skin biopsy was negative for rabies virus antigen by the direct fluorescent antibody test.

Human rabies

871XX=Cytomegalovirus direct fluorescent antibody (DFA)

New legislation gives hope for an improved Medicare payment system for clinical laboratory services

LD also can be diagnosed by a four-fold rise in anti-legionella antibody titer or by direct fluorescent antibody on sputum samples, although the latter method lacks specificity and sensitivity.

Outbreak of Legionnaires' Disease Among Automotive Plant Workers -- Ohio, 2001

Brains of animals that died during MIT were subjected to the direct fluorescent antibody test (DFAT) with polyclonal antirabies fluorescein (FITC)-labeled immune globulins (Scientific-Research Veterinary Institute, Kazan, Russia) or FITC-labeled antirabies diagnostic conjugate (Centocor Inc.

Novel lyssaviruses isolated from bats in Russia

A nuchal skin biopsy tested positive by direct fluorescent antibody test.

Human Rabies -- Quebec, Canada, 2000

anthracis capsule and cell-wall antigens with direct fluorescent antibody tests.

First case of bioterrorism-related inhalational anthrax in the United States, Palm Beach County, Florida, 2001. (Bioterrorism-Related Anthrax)

Samples sent to CDC for testing on December 21 included a nuchal skin biopsy, which tested positive for rabies virus by direct fluorescent antibody test on December 22, and saliva and skin, which were positive by reverse-transcriptase polymerase chain reaction (RT-PCR) assay on December 23.

Human Rabies -- Virginia, 1998

6) (a) DFA, direct fluorescent antibody assay; CW, cell wall; CAP, capsule; MLVA, multiple-locus variable-number tandem repeat analysis.

Two-component direct fluorescent-antibody assay for rapid identification of Bacillus anthracis. (Bioterrorism-Related Anthrax)