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Published on: Jul 09, 2020
2 minute read
By: Dr Rakesh Choudhary

COVID- 19 Tests – What Do You Need To Know?

COVID- 19 tests – What do you need to know?

Author: Dr. Rakesh Choudhary MBBS, MS, FRCS UK, FRCS Orth UK, MChOrth UK.

Dr. Choudhary is a practicing consultant surgeon in the UK.

So many of us think it is not their job to learn about COVID-19 tests and this should be left for the experts and governments to decide about these tests. But I strongly suggest the public must have a basic understanding of these tests which they may have to have themselves.

Basically there are two types of tests, one which can detect the virus in the body and the other one which tells if the person had the previous infection.

Virus test

The virus test detects an active infection. It detects the genetic material (RNA) of the virus during an active infection. It is also called a PCR (polymerase chain reaction) test or nucleic acid test and is sometimes inaccurately called an antigen test.

A swab is taken from deep in the back of your throat and deep in the nose. The swab should go deep up to 7-8 cm and is generally uncomfortable for the patient. Swabbing patients using the correct technique is paramount in ensuring an accurate result. By simply swabbing the inside of the nasal passage is not deep enough to verify that the virus is present.

What does virus testing tell you?

This test tells us if a patient is actively infected with the COVID-19 virus. Virus testing is used mainly for the diagnosis of COVID-19.

When should it be done?

The virus test works best during the first seven days of symptoms.

The coronavirus can be detected in swabs even before symptoms of illness first appear . This is why people can be infectious for a few days before the onset of symptoms, which usually appear about 5 days after the virus infects. Some people have no symptoms throughout their infection but are positive on the virus test and infectious to others. After a few days of illness, the concentration of the virus falls (as seen in swab samples) and the symptoms of the illness usually recede.

Accuracy of the test

In a person with COVID-19, the test is less likely to give a positive result late in the course of infection once the virus has been cleared by the immune system, or if an inadequate sample is taken from the nose or throat. There are concerns that the rate of ‘false negative’ test results could be as high as 30% and a significant number of people are wrongly being told they do not have the virus.

Antibody test

Antibody tests check your blood by looking for antibodies, which may tell you if you had a past infection with the virus that causes COVID-19. Antibodies are protein structures that are produced by the immune system in response to certain infections. The antibody can help fight off infections and can provide protection against getting that disease again (immunity). Antibodies are disease-specific. For example, measles antibodies will protect you from getting measles if you are exposed to it.

The antibody test detects the presence of antibodies as a marker of past infection. The antibody test (blood test) will only detect infections after the immune system has produced antibodies that recognize the virus. This happens approximately 7–10 days after symptoms develop.

Tests carried out a week after a patient develops symptoms will detect only 30% of people who had COVID-19 infection. Accuracy increases to 72% at two weeks and to 94% in the third week. Some people may take even longer to develop antibodies, and some people who are infected may not ever develop antibodies.

Interpretation of the antibody test is complex for non-medical people. Basically having antibodies to the virus that causes COVID-19 may provide protection from getting infected with the virus again. If it does, we do not know how much protection the antibodies may provide or how long this protection may last.

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Zincovit Tablets: Uses, Benefits, Dosage, and Side Effects Explained

Nutritional deficiencies are common in India due to irregular diets, stress, fast-paced lifestyles and increased health demands. Multivitamin supplements are often recommended to support overall health, immunity and energy levels. One commonly prescribed supplement is Zincovit tablets.

This comprehensive guide explains what Zincovit is, its uses, benefits, dosage recommendations and potential side effects.

What Are Zincovit Tablets?

Zincovit is a multivitamin and multimineral supplement that contains:

Zinc
Vitamin C
B-complex vitamins
Vitamin A
Vitamin D
Vitamin E
Selenium and other antioxidants

It is commonly prescribed to address nutritional deficiencies and support immune function.

Uses of Zincovit Tablets

Zincovit may be recommended for:

1. Nutritional Deficiencies

Helps replenish low vitamin and mineral levels due to poor diet or illness.

2. Weak Immunity

Zinc and vitamin C support immune system function.

3. Recovery After Illness

Often prescribed during recovery from infections, surgery or prolonged weakness.

4. Fatigue and Low Energy

B vitamins help improve energy metabolism.

5. Hair and Skin Health

Zinc and antioxidants may support healthy skin and hair.

Benefits of Zincovit Tablets

Immune Support

Zinc plays a vital role in immune cell function.

Antioxidant Protection

Vitamins C and E help reduce oxidative stress.

Improved Energy Levels

B-complex vitamins aid in converting food into energy.

Better Nutritional Balance

Supports individuals with dietary gaps.

Support During Stress

Stress can deplete nutrients; supplementation may help maintain balance.

Recommended Dosage

Adults: Usually one tablet daily after meals
Children: Only if prescribed by a pediatrician
Duration: As advised by healthcare professional

Do not exceed recommended dosage without medical guidance.

How to Take Zincovit

Take after food to prevent stomach irritation
Swallow whole with water
Avoid taking with high-calcium foods unless advised

Consistency improves effectiveness.

Possible Side Effects

Zincovit is generally well tolerated. However, some individuals may experience:

Nausea
Mild stomach discomfort
Metallic taste
Constipation or diarrhea (rare)

Severe allergic reactions are uncommon but require immediate medical attention.

Who Should Use Caution?

Consult a doctor before taking Zincovit if you have:

Kidney disorders
Liver disease
Thyroid problems
Known allergies to supplement components

Pregnant and breastfeeding women should seek medical advice before use.

Can Zincovit Be Taken Long-Term?

Short-term use for deficiency correction is common. Long-term use should be monitored by a healthcare provider to avoid excessive intake of certain vitamins or minerals.

Excess zinc intake may interfere with copper absorption if taken excessively over time.

Zincovit and Immunity in India

With increasing concern about immunity and viral infections, supplements containing zinc and antioxidants have gained popularity. However, supplements should complement — not replace — a balanced diet rich in:

Fruits
Vegetables
Whole grains
Protein sources

Healthy lifestyle habits remain essential.

When to Consult a Doctor

Seek medical advice if you experience:

Persistent fatigue
Recurrent infections
Unexplained weight loss
Severe weakness

These may indicate underlying medical conditions beyond nutritional deficiency.

Balanced Nutrition Still Matters

Supplements cannot substitute a healthy diet. Combine Zincovit with:

Proper hydration
Regular exercise
Adequate sleep
Stress management

This ensures overall wellness.

Conclusion

Zincovit tablets are widely used multivitamin supplements that support immunity, energy levels and overall nutritional balance. When taken in recommended doses, they are generally safe and beneficial for individuals with dietary deficiencies or increased nutritional needs.

However, supplements should be used responsibly and under medical guidance, especially for long-term use. Maintaining a healthy diet and lifestyle remains the foundation of good health.

If you are unsure whether Zincovit is right for you, consult a healthcare professional for personalized advice.

References

Indian Council of Medical Research – Nutrient Guidelines
World Health Organization – Micronutrient Recommendations
National Health Portal India – Supplement Safety
Journal of Clinical Nutrition – Zinc and Immunity Studies
National Institute of Nutrition India – Dietary Guidelines

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