A man uses a swab to take a sample for a Covid test in London. PCR tests are expected soon to be scrapped for travellers and replaced with lateral flow tests. AFP
A man uses a swab to take a sample for a Covid test in London. PCR tests are expected soon to be scrapped for travellers and replaced with lateral flow tests. AFP
A man uses a swab to take a sample for a Covid test in London. PCR tests are expected soon to be scrapped for travellers and replaced with lateral flow tests. AFP
A man uses a swab to take a sample for a Covid test in London. PCR tests are expected soon to be scrapped for travellers and replaced with lateral flow tests. AFP

What is the difference between a PCR test and a lateral flow test?


Laura O'Callaghan
  • English
  • Arabic

PCR tests have been made compulsory for all travellers arriving in the UK as a way to fight the newly discovered coronavirus Omicron mutation.

Accepting only PCR tests means the price goes up for the travelling public as the previous option — a lateral flow test — was cheaper. There are also differences in the time it takes to obtain results and accuracy rates.

UK Prime Minister Boris Johnson announced the move to only PCR on Saturday, a day after the World Health Organisation called Omicron a “variant of concern.”

We're not going to stop people travelling, but we will require anyone who enters the UK to take a PCR test by the end of the second day after their arrival and to self-isolate until they have a negative result,” Mr Johnson said.

The devolved administrations in Scotland, Wales and Northern Ireland have adopted similar measures for travellers.

So what is the difference between the two tests?

Price tag

Polymerase chain reaction, or PCR, tests cost about £65 ($86) and in-store ones retail for about £85. Private clinics tend to charge about £200 per test.

These prices are significantly higher than for lateral flow tests which can be sold for anywhere between £5 and £30.

When PCR tests were scrapped in favour of lateral flow tests, the move saved families hundreds of pounds per trip.

Taking the test

Both require a swab to be taken from the nose or throat.

For a PCR, the swab has to be sent to a laboratory where researchers analyse it and the result is delivered to the customer, usually be email.

This can take up to two or three days, depending on whether there are any backlogs in labs.

The LFT swab on the other hand is inserted into a capsule of liquid before being poured into a device. The rapid tests have been used in schools and workplaces and for allowing entry to events.

Advice varies but most manufacturers say to wait about 15 minutes before accepting the results displayed.

Lateral flow tests are a quick and easy alternative to PCR tests and can be done at home. AFP
Lateral flow tests are a quick and easy alternative to PCR tests and can be done at home. AFP

Test results

PCR test results are sequenced in labs to pick up variants of concern and that includes the Omicron mutation. This is why they are recommended for people experiencing Covid symptoms.

Because of their high reliability in this regard, the UK government was, for a long time, reluctant to replace them with LFTs.

The government also realised the quality of lateral flow tests has improved since the start of the pandemic.

Travel companies have long said that pricey PCR tests are deterring people from booking flights abroad.

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JOKE'S%20ON%20YOU
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The specs

Price, base / as tested Dh12 million

Engine 8.0-litre quad-turbo, W16

Gearbox seven-speed dual clutch auto

Power 1479 @ 6,700rpm

Torque 1600Nm @ 2,000rpm 0-100kph: 2.6 seconds 0-200kph: 6.1 seconds

Top speed 420 kph (governed)

Fuel economy, combined 35.2L / 100km (est)

The years Ramadan fell in May

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The five pillars of Islam

1. Fasting 

2. Prayer 

3. Hajj 

4. Shahada 

5. Zakat 

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Engine: 2-litre turbocharged

Power: 254hp

Torque: 390Nm

Price: From Dh126,000

Available: Now

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The burning issue

The internal combustion engine is facing a watershed moment – major manufacturer Volvo is to stop producing petroleum-powered vehicles by 2021 and countries in Europe, including the UK, have vowed to ban their sale before 2040. The National takes a look at the story of one of the most successful technologies of the last 100 years and how it has impacted life in the UAE. 

Read part four: an affection for classic cars lives on

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GAC GS8 Specs

Engine: 2.0-litre 4cyl turbo

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Torque: 400Nm at 1,750-4,000rpm

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Engine: 4.0-litre, six-cylinder

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Power: 395bhp

Torque: 420Nm

Price: from Dh321,200

On sale: now

COMPANY PROFILE

Name: Rain Management

Year started: 2017

Based: Bahrain

Employees: 100-120

Amount raised: $2.5m from BitMex Ventures and Blockwater. Another $6m raised from MEVP, Coinbase, Vision Ventures, CMT, Jimco and DIFC Fintech Fund

What is a calorie?

A food calorie, or kilocalorie, is a measure of nutritional energy generated from what is consumed.

One calorie, is the amount of heat needed to raise the temperature of 1 kilogram of water by 1°C.

A kilocalorie represents a 1,000 true calories of energy.

Energy density figures are often quoted as calories per serving, with one gram of fat in food containing nine calories, and a gram of protein or carbohydrate providing about four.

Alcohol contains about seven calories a gram. 

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Recipe: Spirulina Coconut Brothie

Ingredients
1 tbsp Spirulina powder
1 banana
1 cup unsweetened coconut milk (full fat preferable)
1 tbsp fresh turmeric or turmeric powder
½ cup fresh spinach leaves
½ cup vegan broth
2 crushed ice cubes (optional)

Method
Blend all the ingredients together on high in a high-speed blender until smooth and creamy. 

UAE currency: the story behind the money in your pockets
RedCrow Intelligence Company Profile

Started: 2016

Founders: Hussein Nasser Eddin, Laila Akel, Tayeb Akel 

Based: Ramallah, Palestine

Sector: Technology, Security

# of staff: 13

Investment: $745,000

Investors: Palestine’s Ibtikar Fund, Abu Dhabi’s Gothams and angel investors

Mina Cup winners

Under 12 – Minerva Academy

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Under 16 – Fursan Hispania

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Read part three: the age of the electric vehicle begins

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The years Ramadan fell in May

1987

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THE DETAILS

Kaala

Dir: Pa. Ranjith

Starring: Rajinikanth, Huma Qureshi, Easwari Rao, Nana Patekar  

Rating: 1.5/5 

UJDA CHAMAN

Produced: Panorama Studios International

Directed: Abhishek Pathak

Cast: Sunny Singh, Maanvi Gagroo, Grusha Kapoor, Saurabh Shukla

Rating: 3.5 /5 stars

10 tips for entry-level job seekers
  • Have an up-to-date, professional LinkedIn profile. If you don’t have a LinkedIn account, set one up today. Avoid poor-quality profile pictures with distracting backgrounds. Include a professional summary and begin to grow your network.
  • Keep track of the job trends in your sector through the news. Apply for job alerts at your dream organisations and the types of jobs you want – LinkedIn uses AI to share similar relevant jobs based on your selections.
  • Double check that you’ve highlighted relevant skills on your resume and LinkedIn profile.
  • For most entry-level jobs, your resume will first be filtered by an applicant tracking system for keywords. Look closely at the description of the job you are applying for and mirror the language as much as possible (while being honest and accurate about your skills and experience).
  • Keep your CV professional and in a simple format – make sure you tailor your cover letter and application to the company and role.
  • Go online and look for details on job specifications for your target position. Make a list of skills required and set yourself some learning goals to tick off all the necessary skills one by one.
  • Don’t be afraid to reach outside your immediate friends and family to other acquaintances and let them know you are looking for new opportunities.
  • Make sure you’ve set your LinkedIn profile to signal that you are “open to opportunities”. Also be sure to use LinkedIn to search for people who are still actively hiring by searching for those that have the headline “I’m hiring” or “We’re hiring” in their profile.
  • Prepare for online interviews using mock interview tools. Even before landing interviews, it can be useful to start practising.
  • Be professional and patient. Always be professional with whoever you are interacting with throughout your search process, this will be remembered. You need to be patient, dedicated and not give up on your search. Candidates need to make sure they are following up appropriately for roles they have applied.

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Updated: November 30, 2021, 5:07 PM`