Positive and negative controls must be included in any immunoassay. Controls are always run before the experimental samples to establish validity of sample results. A false positive may result from the contamination of the sample with the antigen. only the 1st statement is true only the 2nd statement is true only the 3rd statement is true the 1st and 2nd statements are true the 2nd and 3rd statements are true the 1st and 3rd statements are true all the statements are true all statements are false

Positive and negative controls must be included in any immunoassay. Controls are always run before the experimental samples to establish validity of sample results. A false positive may result from the contamination of the sample with the antigen. only the 1st statement is true only the 2nd statement is true only the 3rd statement is true the 1st and 2nd statements are true the 2nd and 3rd statements are true the 1st and 3rd statements are true all the statements are true all statements are false

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter15: Feed And Protect Me

Section: Chapter Questions

Problem 1M

See similar textbooks

Similar questions

To detect a toxin in food, the contaminated food is normally injected into at least two guinea pigs. The guinea that was vaccinated against this toxin survives, while the one that was not vaccinated dies. This is an example of an/a agglutination test precipitation test fluorescent antibody test neutralization test ELISA test
In an immunoassay what is a secondary antibody? Antibodies used to recognize antigens. They confer specificity to the immunoassay. Secondary antibodies line the wells of the ELISA test strip. Secondary antibodies recognize and bind to primary antibodies. Secondary antibodies interact directly with the antigen.
A diagnostic assay that gives a high number of false-negative test results has a low selectivity. antigenic variation. sensitivity. O specificity.
An ELISA test is useful for detecting the presence of antigens but not antibodies in a sample. true or false
Vaccines can be made for many types of pathogen, such as bacterial and viral pathogens. True The whole statement is true. False Some of the statement is false.
If you gain immunity to an antigen by receiving a vaccine this is: Natural passive Artificial passive Natural active Artificial active
Enzyme immunoassay tests are used to screen blood specimens for the presence of antibodies to HIV, the virus that causes AIDS. Antibodies indicate the presence of the virus. The test is quite accurate but is not always correct. Approximate probabilities of positive and negative test results when the blood tested does and does not actually contain antibodies to HIV are given in the table. Test Result Positive Negative Antibodies present 0.9985 0.0015 Antibodies absent 0.0060 0.9940 Suppose that 1%1% of a large population carries antibodies to HIV in their blood. Probabilities from trials with 2897 people known to be free of HIV antibodies and 673 people known to be infected, reported in J. Richard George, "Alternative specimen sources: methods for confirming positives," 1998 Conference on the Laboratory Science of HIV, found online at the Centers for Disease Control and Prevention, www.cdc.gov. (b) What is the probability that the test is positive for a…
The direct ELISA test requires only one antibody only one antigen both primary and secondary antibody only secondary antibody conjugated with enzyme system
Predict the outcome of an error in ELISA protocol consisting of adding the antibodies in the wrong order. * i.e., the secondary antibody is added 1st; the primary is added 2nd Your answer
Which of the following is TRUE about the Latex Agglutination test? Question 1 options: A Antibodies and antigens react and cannot be detected with the naked eye B Specific antigens are attached to latex particles C Is used to detect antigens in a patient's serum D Antibodies can only be detected in serum E Antigens cannot be used to detect a specific antibody Which of the following is NOT TRUE about immunological tests? Question 2 options: A Antibodies can be used to detect specific antigens B An agglutination reaction is the reaction of an antibody with a soluable antigen C An agglutination reaction is the result of a particulate antigen with a specific antibody D Based on reactions between antigen and antibody E Precipitation reactions cannot be seen with the naked eye What can you say about a positive latex…
Briefly explain where each antibody comes from in the examples below. When cold ends antibodies come from. Partially alive, weakened or dead pathogen vaccine. A fetus receiving IgG from a virus through a placenta. Anti venom used for a snake bite.
When a patient exhibits a four-fold or greater rise in antibody titer against a specific microbial antigen between acute-phase and convalescent-phase serum samples, this is considered to be a “seroconversion”. Which of the following would be a correct interpretation of a seroconversion? what option below is the answer? None of the other four answers are a correct interpretation of a seroconversion These results show that the microbe itself has been detected in the patient’s sample(s) These findings cannot be interpreted because antibodies aren’t specific enough for antigens There is no evidence of current active infection because that would require that the antibody titer is decreasing rather than increasing The results show evidence of current or recent infection by the specific microbe because there has been an active immunologic response to its antigen