Pcr

PCR is the short form for a polymerase chain reaction. It is a method used to make copies of DNA or RNA in samples containing only minute quantities of both. This test is done to diagnose hereditary conditions, in DNA profiling, and the diagnosis of infectious disease.

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Why do I feel sick for two days even after testing negative for COVID-19?

Query: Hello doctor,I have been sick recently for two whole days and have symptoms that are flu-like or COVID-like. I took the test, but it turned out to be negative, but I am still feeling very ill, so I am guessing that I have the flu. What do I do if I cannot go back to work due to all the symptoms I am...  Read Full »


Dr. Basuki Nath Bhagat

Answer: Hello,Welcome to icliniq.com.I understand your concern. It is good to read that the COVID-19 test turned out negative. Most probably, you would be having symptoms like body ache, headache, sore throat, fever, dry cough, etc. Similar symptoms are observed in COVID-19 also, but you have done RT-PCR (...  Read Full »

I have some concerns. Do HIV combo test detect p24 antigen for HIV-2?

Query: Hello doctor, I have some concerns regarding HIV testing. Please answer my questions below regarding the same. Does HIV combo test detect p24 antigen for HIV-2? Do combo tests and antibody tests detect all subtypes and strains of HIV? Can a PCR test detect all subtypes of HIV? Thank you.  Read Full »


Dr. Parth R Goswami

Answer: Hello, Welcome to icliniq.com. Thanks for writing in, and I understand your concern. Based on your attached report (attachments removed to protect the patient's identity) of the human immunodeficiency virus (HIV) combo test, it can detect both 1 and 2 types of HIV virus. As I can see, it is a ne...  Read Full »

Is it essential to get a PCR test done for chronic prostatitis?

Query: Hi doctor, We spoke yesterday regarding my chronic pelvic pain condition. I would be doing both urine and semen culture soon. Is there any specific culture or PCR testing to be done? The reason I am asking this is that the traditional dipstick and culture test does not seem to be accurate based ...  Read Full »


Dr. Samer Samer Juma Ali Altawil

Answer: Hi, Welcome back to icliniq.com. The method varies, and the PCR (polymerase chain reaction) is accurate when there are atypical bacteria like TB (tuberculosis), for example. Your urine microscopic analysis showed no bacteria. The thing I am trying to get is the sample that contains the organis...  Read Full »

How should I interpret my HIV, ELISA/ECLIA test result?

Query: Hello doctor, I have some queries about HIV, ELISA/ECLIA TEST. What is the cut-off for this test? In some lab reports, they do not mention the cut off rate. They just mention if it is reactive or non-reactive. In some labs, 0.9 is the cut off while in others, it is different. Why is it so?  Read Full »


Dr. Arun Kaushik. R

Answer: Hello, Welcome to icliniq.com. The cut-off depends on the kit and the instrument used. For more information consult a microbiologist online --> https://www.icliniq.com/ask-a-doctor-online/microbiologist  Read Full »

My rapid antigen and PCR tests were negative after 48 hours of positive COVID PCR test. Why?

Query: Hi doctor, I received a positive result from a COVID PCR test and then received a negative result from a rapid antigen and a PCR test two days later. I have had no symptoms. Can I reasonably assume that I am COVID-free? Kindly give your opinion.  Read Full »


Dr. Basuki Nath Bhagat

Answer: Hello, Welcome to icliniq.com. I read your query. Sorry for such mixed results. First test COVID PCR (polymerase chain reaction) positive followed by negative result by rapid antigen testing (RAT) and COVID PCR after two days. In your case, two different molecular testing platforms were used...  Read Full »

What are the clinical features of MRSA infection?

Query: Hello doctor, I am very concerned about contracting MRSA. I was in a public bathroom, and I washed my hands and absent-mindedly touched the public door handle, and later I washed my hands, after which I picked inside my dry, irritated nose. I know this is very unsanitary, and now I am concerned I m...  Read Full »


Dr. Muhammad Zubayer Alam

Answer: Hi, Welcome to icliniq.com. Thanks for the query. I can understand your concern. Your statement is very much concerned about contracting MRSA (methicillin-resistant staphylococcus aureus) by picking your nose after touching the public toilet door handle. Clinical features of MRSA infection are pa...  Read Full »

Why do I get an odd sensation in shoulders and head?

Query: Hello doctor, When I try to go to sleep every night, this horrible gas has disturbed my immune system, and some solid-like comes up from my shoulder area to the right side of my head and attacks me all night long. I am exhausted from it all. I believe it is a virus. Lab work found I have an aggress...  Read Full »


Dr. Sugreev Singh

Answer: Hi, Welcome to icliniq.com. Such a weird sensation can be due to parasitic infection only, and as you mentioned, you have a previous history of insect bites. So most probably it is due to that only. I would suggest you continue with the antiviral therapy you are currently taking. And along with t...  Read Full »

How to confirm if I am infected with COVID-19 for the second time?

Query: Hello doctor, Please tell me if this is my second infection with COVID-19, whether or not I have been contagious for the past five days. If this COVID could be indicative of a larger health problem. What bloodwork or tests you think might prove useful to understanding my health? I was very sick for...  Read Full »


Dr. Nagaraj Patil

Answer: Hello, Welcome to icliniq.com. I can understand your concern. First thing, second COVID infection cannot be ruled out. Earlier infection with COVID does not completely protect against the second infection. Still, the severity definitely will be reduced as you already have some antibodies in your...  Read Full »

Can I take PCR test for COVID-19 before having a transit?

Query: I just have questions regarding PCR test. I will be flying out soon and will have a transit and stay the night before continue to my last destination. But due to conditions after the first test before flying I still need to go out and meet people. I am concerned and would like to have another test w...  Read Full »


Dr. J. N. Naidu

Answer: Hi welcome to icliniq.com I understand your anxiety. Appreciate that it takes sometime for the virus after it enters humanbody to multiply and cause disease symptoms like dry cough, sore muscles, fever, loss of taste,smell etc. This is called incubation period. Incubation period for covid 19 is 6 ...  Read Full »

Kindly suggest medications for high fever due to COVID-19.

Query: Hello doctor, I am 47 years old. I tested COVID-19 positive. I started mild fever before six days until yesterday I had only a mild fever 98-99 F. Since last night, my temperature has gone up to 101 and not reducing. I have not started taking any medicine until now. Which medicine should I start to...  Read Full »


Dr. Shubadeep Debabrata Sinha

Answer: Hello, Welcome to icliniq.com. You must not worry, but you must take adequate precautions and necessary treatment. The precaution is trying to ensure your family members do not get infected along with you. You must isolate yourself at home and take suggested measures. However, if the condition w...  Read Full »

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