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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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20% Health Time | A Smarter Way to Build Workplace Wellbeing

Modern workplaces are increasingly recognising that employee health is not separate from performance—it is foundational to it. Long work hours, constant digital connectivity and rising stress levels have led to burnout, lifestyle diseases and declining engagement across industries. In this context, the concept of 20% Health Time has emerged as a forward-thinking approach to workplace wellness.

20% Health Time allows employees to dedicate a portion of their paid working hours specifically to activities that support physical, mental and preventive health. Rather than treating wellness as an after-hours responsibility, this model integrates health directly into the work culture.

What Is 20% Health Time?

20% Health Time is a structured workplace initiative where employees are encouraged or allowed to spend approximately one-fifth of their working time on health-related activities.

These activities may include:

physical exercise or movement breaks
mental wellness practices
health education sessions
preventive health screenings
stress management and recovery

The core idea is simple: healthier employees perform better and sustain productivity longer.

Why Traditional Wellness Programs Fall Short

Many organisations offer wellness benefits such as gym memberships or annual checkups. While valuable, these programs often fail because:

employees lack time to use them
wellness is seen as optional
participation remains low
benefits are disconnected from daily work

20% Health Time addresses these gaps by embedding wellness into regular work hours.

Why Health Time Matters in Today’s Workplace

Rising Lifestyle Disease Burden

Public health data shows increasing rates of:

diabetes
hypertension
obesity
mental health disorders

These conditions affect working-age adults and directly impact productivity and healthcare costs.

Burnout and Mental Fatigue

Constant pressure and lack of recovery time lead to:

chronic stress
disengagement
absenteeism
high attrition

Health Time creates space for recovery and resilience.

Sedentary Work Culture

Desk-bound work contributes to:

musculoskeletal problems
cardiovascular risk
low energy levels

Dedicated health time encourages movement and prevention.

How 20% Health Time Benefits Employees

Improved Physical Health

Regular movement and preventive care reduce long-term health risks.

Better Mental Wellbeing

Time for mindfulness, rest and stress management improves emotional balance.

Higher Energy and Focus

Healthy routines improve concentration and reduce fatigue.

Empowerment and Autonomy

Employees feel trusted to manage their wellbeing, increasing engagement.

How Employers Benefit from 20% Health Time

Increased Productivity

Healthy employees work more efficiently and make fewer errors.

Reduced Absenteeism

Preventive care lowers sick days and health-related disruptions.

Lower Healthcare Costs

Early detection and healthier habits reduce long-term medical expenses.

Stronger Employer Brand

Wellbeing-focused policies attract and retain top talent.

Sustainable Performance

Health Time supports long-term performance rather than short-term output.

Activities That Fit into 20% Health Time

Organisations can tailor activities based on workforce needs:

guided fitness or yoga sessions
walking or movement breaks
mental health workshops
preventive health checkups
nutrition education
stress and sleep management programs

Flexibility ensures inclusivity across roles and work models.

Evidence Supporting Health Time Initiatives

Workplace health research consistently shows that:

preventive health improves productivity
employee wellbeing programs reduce burnout
time invested in health yields measurable returns

According to WHO and workplace wellness studies, integrated health initiatives deliver better outcomes than standalone benefits.

Addressing Common Concerns

“Will this reduce working hours?”

No. Health Time improves efficiency, offsetting time spent through better performance.

“Is it suitable for high-pressure roles?”

Yes. High-stress roles benefit the most from structured recovery time.

“How do we measure impact?”

Metrics may include:

reduced absenteeism
improved engagement scores
lower healthcare claims
better retention

Implementing 20% Health Time Effectively

Successful implementation requires:

leadership support
clear guidelines
flexible scheduling
inclusive activity options
regular feedback

Health Time works best when seen as a cultural shift, not a perk.

Long-Term Impact on Organisational Health

Over time, organisations adopting Health Time observe:

healthier workforce
improved morale
reduced burnout
stronger team cohesion
sustainable growth

These benefits compound year after year.

Conclusion

20% Health Time represents a progressive shift in how organisations view employee wellbeing. By dedicating work time to health, companies acknowledge that productivity and wellbeing are deeply connected. Rather than reacting to burnout and illness, Health Time promotes prevention, balance and resilience. In a future where talent, performance and sustainability matter more than ever, integrating health into the workday is not a luxury—it is a strategic necessity.

References

World Health Organization (WHO) – Workplace Health Promotion Guidelines
Indian Council of Medical Research (ICMR) – Lifestyle Disease and Work Health Reports
NITI Aayog – Preventive Healthcare and Workforce Wellbeing Strateg
Lancet – Workplace Wellness and Productivity Studies
Harvard Business Review – Employee Wellbeing and Performance Research
Statista – Corporate Wellness Trends and ROI Data

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