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RAPID ANTIBODY TEST FOR COVID 19 GOT USFDA TEMPORARY AUTHENTICATION.

Dear my friends and fellow Colleagues, Here is an update on Rapid Antibody Test for COVID 19. USFDA Grants Emergency Authorisation for first Rapid Antibody test for COVID19. A drop of serum, plasma or whole blood is required for testing with results for IgG & IgM antibodies to be read in 15-20 minutes. The test has 93-96% sensitivity & specificity. Negative results should be rechecked after few days & Positive results should be confirmed by RT-PCR, April, 2020. Regards and thanks, Dr Sepuri Krishna Mohan.

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Sir, nice updates! After natural infection,How much time is req to form antibodies in our body? How would you interpret positive IgM value. Regards!
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Sir, nice updates! After natural infection,How much time is req to form antibodies in our body? How would you interpret positive IgM value. Regards!
Dear Sandeep, Thanks for your kind interaction. But it's pretty tough to answer your questions as we know a little about COVID 19. According to the expert Virologists, the Antibodies against natural Infection form after 7 to 10 days. This varies from person to person and depends on the immunological condition. This drastically varies in people suffering from Diabetes Elderly patients HTN Heart Diseases COPD/COAD patients Smokers Immuno Compromised patients Malignancy Patients on Chemotherapy & Radiotherapy. Coming to the second part of your question, As we are using Rapid Kits for IgM & Ig G, no values except Positive or Negative like this is a combined test for both IgM & IgG, we need to look into either negative or positive only. Sensitivity varies from 81.8% to 92.6%. Specificity remains standard like 96.7%. We need to interpret the results as IgM Positive/Negative IgG Positive/Negative Both IgM & IgG Positive/Negative. There are several manufacturers of this Rapid COVID 19 Test like BioMedonics SD Biosensor RayBiotech. We can call this COVID 19 Elisa Kit, to be more specific Human SARS-CoV-2 IgG/IgM, 2019-nCoV/Coronavirus Elisa Kit. Regards and thanks, Dr Sepuri Krishna Mohan.
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Negative results doesn't mean the patient is free from disease
That's why it's clearly stated in the update that negative results require retest again after few days. Positive results should be corroborated with RT PCR. Specificity and sensitivity of this rapid test is 93 to 96%.
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Highly appreciable gesture, thanks.
Thank you doctor
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