I'm really worried because my father-in-law just tested positive for COVID-19. His report says "RESULTS Positive" but there's also something called "Bio Ref Interval" that shows as "Negative." Can you help me understand what that means? Is this related to a stage of COVID-19, or does it indicate something else?

Answered by 1 Apollo Doctors

Dr Chandra P

General Practitioner

MBBS
5+ Yrs

Consult Now

The "Bio Ref Interval" being negative typically indicates that the test result falls outside the reference range for a negative result, confirming the presence of the virus. As for COVID-19, it doesn't have specific "stages," but the severity can vary from mild to severe, and it is categorized based on symptoms and clinical findings, such as mild, moderate, severe, and critical. It's important to monitor his symptoms and follow healthcare advice for appropriate management.

Dr. Chandra Suggests...

Consult a Infectious Disease specialist

Find a Infectious Disease specialist

Answered 04/07/2025

More Infectious Disease Health Queries

View all

How can I tell if I might have HIV? What are the main issues it can cause, and what are the signs or symptoms to look out for?

Visit nearest STD clinic and get tested for HIV.

Answered by 1 Apollo Doctors

I'm trying to understand these test results better. It says "Salmonella typhi O TO Reactive up to Titre 140" and "Salmonella typhi H TH Reactive up to Titre 1160." Then there's "Salmonella paratyphi A H AH Reactive up to Titre 180," but "Salmonella paratyphi B H BH Non Reactive." Should I be worried about these numbers? What's the difference between my typhi and paratyphi results? Any advice on what these mean for my health? I'm kind of concerned about what I should do next.

mild typhoid no need to worry

Answered by 1 Apollo Doctors

I had unprotected sex about three months ago, and while I haven't noticed any specific issues, I'm a bit worried and want to make sure I don't have any STDs or STIs. What tests should I get? Are there any good labs in Bangalore for this? And how often should I be getting tested?

test for std

Answered by 1 Apollo Doctors

Health Articles for you

View all

Fever

Acute Febrile Illness Overview and Information

Get a clear overview of acute febrile illness (AFI), including common causes like infections, symptoms, and diagnostic approaches. Learn about the importance of early diagnosis and treatment for a full recovery.

Bird flu avian influenza

Bird Flu: Symptoms, Causes, Cure And Prevention Of Bird Flu

Bird flu has high public health concerns. Humans get the infections from the diseased birds with certain conditions. So, know the symptoms, causes, and cure for this disease.

Legionnaires disease

Understanding the Root Cause: The Legionella Bacterium

Learn about the Legionella bacterium — its sources, how it spreads, health risks like Legionnaires’ disease, and key prevention strategies to stay safe.

HIV AIDS

Guide to Hiv And Aids Are Not The Same Thing

Learn the crucial difference between HIV and AIDS, how the virus progresses, ways to prevent transmission, and modern treatments that make HIV a manageable condition. Get clear facts to fight stigma and misinformation.

Influenza flu

Common Symptoms of Flu

Get information about the flu signs, medications, and how to avoid getting the flu this season: vaccinations, hygiene practices, and more.

Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.