Covid-19 Testing

Diagnostic tests and Antibody tests are the two types of COVID-19 tests. Of the two, the former detects active COVID-19 infection using a nasal or nasopharyngeal swab, whereas the latter detects a past infection with the help of blood. Diagnostic tests are further divided into Antigen tests like Rapid and Molecular tests like the RT-PCR, NAAT, LAMP test. One should get tested for COVID-19 if he/she has symptoms of COVID-19 or had close contact with an infected person, or engaged in activities without social distancing.

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What is the cause for having a cough with phlegm for a long period?

Query: Hi doctor, I have had my cough with phlegm for almost a month now. I have had two swab tests already, and both got negative for COVID results. What can I do to be relieved of my cough? I am taking Ascof Lagundi, and in the past, I used to take Solmux. Kindly help me.  Read Full »

Dr. Zubayeralam

Answer: Hi, Welcome to I can understand your concern. According to your statement, you have been suffering from a cough with phlegm for almost a month. Your RT-PCR (reverse transcriptase-polymerase chain reaction) for COVID-19 tests were negative. Cough with phlegm for a month may resu...  Read Full »

Does my symptomatic friend have a COVID-19 infection if he tests negative?

Query: Hi doctor,My friend's COVID-19 test is negative. Test says "suggestive COVID-19," and lungs are more than 50% infected. His oxygen levels are normal, and he is constantly monitoring oxygen levels. He is unsure about the medicines given to him and is stuck in a place with not much access to big hospi...  Read Full »

Dr. Zubayeralam

Answer: Hi, Welcome to Thank you for the query. I can understand your concern. The recent HRCT (high resolution computed tomography) of the chest has revealed patchy and sub-segmental ground-glass opacities associated with inter and intralobular septal thickening and architectural distort...  Read Full »

Can only one partner test positive for COVID?

Query: Hi doctor, I need advice for me and my wife. She is 5 months pregnant. We both went for a covid test as I became ill and had all the symptoms of COVID-19. My wife did not have any symptoms but she was also tested as she is pregnant and we had a lot of contacts. The results came back yesterday. My w...  Read Full »

Dr. Utkarsh Sharma

Answer: Hi, Welcome to I understand your concern and I will definitely help you regarding it. It is important to note that the sensitivity of RT-PCR (reverse transcription-polymerase chain reaction) test in detecting covid infection is around 70 percent only which means that only 70 out o...  Read Full »

What is the cause for CRP (C-reactive protein) value rise in COVID-19 patients?

Query: Hi doctor, My brother was tested positive for COVID and was under home isolation. His CT score on sunday morning was 10/25, progressive, and CRP was 10. The next day he developed a 1020F fever, and we admitted him to the hospital. CRP score at the time of admission was 90 mg/L. The medication start...  Read Full »

Dr. Zubayeralam

Answer: Hello, Welcome to Thank you for the query. I can understand your concern. CRP (C-reactive protein) is an acute-phase protein. During infectious or inflammatory disease states, CRP levels rise rapidly within the first six to eight hours and may peak at a level of up to 350 to 400 mg/L ...  Read Full »

What does CT (computed tomography) severity score mean?

Query: Hi doctor, I was tested positive for COVID-19 seven days back. I am having some mild symptoms. I am checking my oxygen levels using a pulse oximeter. I have a range of 90 to 100% for the past three days. I do not have any difficulty in breathing. I took a CT chest after six days. I am attaching it....  Read Full »

Dr. Zubayeralam

Answer: Hi, Welcome to I understand your concern. I have gone through the attached reports (attachment removed to protect patient identity). According to your HRCT (high resolution computed tomography) of chest and RT-PCR (reverse transcriptase-polymerase chain reaction) test results, you...  Read Full »

What investigations are needed in a suspected COVID-19 patient?

Query: Hi doctor,My mother is having fever and cold, slight cough for the last three days. Fever is coming every 10 hours and reducing with tablet Paracetamol. According to the local doctor's advice, we gave her capsule Doxt SL 100 mg twice daily and tablet Calpol for four days. Also, we gave her multivita...  Read Full »

Dr. Zubayeralam

Answer: Hi, Welcome to Thank you for the query. I can understand your concern. According to your statement, your mother has been suffering from fever, cough, or cold for the last three days. According to the X-ray report (attachment removed to protect the patient's identity), it seems normal...  Read Full »

How accurate are the COVID-19 RT-PCR and rapid tests?

Query: Hi doctor,About a month ago, I tested positive for COVID-19 in RT-PCR and rapid tests. I had a fever for less than a day of 37.5 degrees and some muscle ache. My wife also tested positive five days later in only the rapid test. She had hot flashes and headache as symptoms and a little nose block. Th...  Read Full »

Dr. Zubayeralam

Answer: Hi, Welcome to Thank you for the query. I can understand your concern. According to the statement, your wife has suffered from COVID-19 (coronavirus disease 2019) like signs and symptoms. But, all the investigations like RT-PCR (reverse transcription-polymerase chain reaction) and rap...  Read Full »

Who are indicated for a COVID-19 test?

Query: Hi doctor, I have throat pain for the last two days. My body temperature is 37.2 degrees, and my SpO2 is 97 to 98 percent. Should I take a COVID-19 test? I am taking the medicine Amoxicillin for throat pain. It is much better, but my temperature is 37.2 degrees. Is it a fever or not? Please let me ...  Read Full »

Dr. B Vageesh Padiyar

Answer: Hi, Welcome to Yes, you must get the COVID-19 (coronavirus disease 2019) test done. You can either get the rapid antigen test or the RT-PCR (reverse transcription-polymerase chain reaction) done. Until the reports come, I suggest the following, 1. Tablet containing a combination of A...  Read Full »

Is RT-PCR test for COVID-19 needed if there is intermittent fever with no other symptoms?

Query: Hi doctor, My sister is 31 years old and is a homemaker. She has a fever for the past three days, intermittently for every five to six hours. Today we gave her blood samples for test. We have attached the test results. Kindly provide some medicine for the same.  Read Full »

Dr. Tanmai Yermal (jain)

Answer: Hello, Welcome to I went through your query for your sister. Can you send me some more details about her present symptoms? Is her fever high grade or low grade? Is she having any other symptoms like cough, body ache, tiredness, loss of smell and taste, loose motions, breathing dif...  Read Full »

What does the CT- chest scan value indicate in COVID-19 patients?

Query: Hi doctor,My friend is infected with COVID-19. He got his CT scan done, and I have his report from the lab. Since the information has all technical terms, I want to understand how severe his condition and case are. He will consult another doctor, who most probably will start steroids to control it f...  Read Full »

Dr. C Elanchezhian

Answer: Hi, Welcome to CT (computed tomography) scan shows (attachments removed to protect the patient's identity) a lung involvement value of 16/25 which means there are blood clots in the lung field due to COVID-19 infection. There are three lobes in the right and two lobes in the left lung...  Read Full »

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