Products Category : Healthcare / Healthcare
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Brand name : Healthy laboratory
What is the normal Widal test? The normal range for the widal test is that the titres of O and H antigens are less than 1:160 and are considered negative. The titres of O and H antigens above 1:160 to 1:320 or above are considered positive.
What are the Widal test positive values? Widal test positive values indicate that the person has the Salmonella enterica serovar typhi bacterial infection. In the typhoid report positive, both O and H antigen titres are present. S typhi O positive means active infection of typhoid fever.