it is require to check the rising titre.
it is used in the lab for VDRL, Widal test, & such other tests .
The main difference between the Widal slide test antigen and the Widal tube test antigen lies in the method of reaction visualization. In the Widal slide test, the reaction is observed on a glass slide under a microscope, whereas in the Widal tube test, the reaction is seen in small test tubes. Both tests detect antibodies against specific Salmonella antigens, but differ in their setup and visual interpretation.
it is used in the lab for VDRL, Widal test, & such other tests .
That is a good question! The answer is simple. You do step by step dilution of the serum with probably normal (isotonic) saline solution and test the same for Widal test. This is how you do quantitative test for many other tests also.
What is false positive in widal test
I mean widal test result positive after treatment
Isolated Widal test reading does not have much clinical significance. Rising titre of Widal test done one week apart, in a febrile patient, indicates typhoid fever. You can have such rising titre of Widal test in healthy patient, after dose of typhoid vaccine.
1:80 titre is significant for determination of widal positive.
widal test
To a certain extent yes.The post antibiotics Widal Test will have Low titers of agglutinins.Hence the test may be reported as False Negative.
The blood test for typhoid is called the Widal test. It detects antibodies in the blood against the Salmonella typhi bacteria, which causes typhoid fever.
manual test of widal method