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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does This Blood Test Result For High Fever Indicate?

Hi,I had fever 2 days back, then I checked the body temp, it was 100.3F, then I taken the tablets for normal fever. but on next day my fever rose and when I checked it is 101.3F. Then my doctor told me take the blood test, then in WIDAL TEST, I have got the below things, Salmonella typhi O -1: 40 positive Salmonella typhi H -1: 40 positive Mp/MF - negative Could you pls whether what the above results infer. After the blood test my temp became normal, but just having some body pain.
Mon, 8 Feb 2016
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  Anonymous's Response
's  Response
Hi, I understand your concerns about what you are going through.

First of all, I will say that the test results presented are inconclusive, assuming they are reliable.

As regards the WIDAL test, the titres are small indicating a past typhoid infection or the onset of a new infection. If another WIDAL test is done after a few days and shows rising titres, then an active typhoid infection is very likely. If the titres stay the same, then it is probably a past infection. Alternatively, blood or stool culture can be done and they are more specific but not always positive even in case of an active infection.

Concerning the MP test, a negative test performed by an experienced technician rules out malaria in most but not all cases. In malaria endemic regions, a repeat test should be performed if fever persists after two days.

If repeat tests are still inconclusive and/or symptoms persist, other causes of fever should be investigated.

I hope this adequately addresses your concerns. In case of further concerns, be sure to contact me again. Wish you good health.
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What Does This Blood Test Result For High Fever Indicate?

Hi, I understand your concerns about what you are going through. First of all, I will say that the test results presented are inconclusive, assuming they are reliable. As regards the WIDAL test, the titres are small indicating a past typhoid infection or the onset of a new infection. If another WIDAL test is done after a few days and shows rising titres, then an active typhoid infection is very likely. If the titres stay the same, then it is probably a past infection. Alternatively, blood or stool culture can be done and they are more specific but not always positive even in case of an active infection. Concerning the MP test, a negative test performed by an experienced technician rules out malaria in most but not all cases. In malaria endemic regions, a repeat test should be performed if fever persists after two days. If repeat tests are still inconclusive and/or symptoms persist, other causes of fever should be investigated. I hope this adequately addresses your concerns. In case of further concerns, be sure to contact me again. Wish you good health.