Warning as these fizzy drinks can make your Covid lateral flow test positive

Most people across the country are used to taking Covid lateral flow tests to stop the spread of the virus.

Although they have no symptoms, some choose to get tested if they have been around large groups or have been in contact with someone who has tested positive for coronavirus.

But if you don’t have symptoms, you might worry about getting a false positive.

Read more stories about the coronavirus here.

If you are doing a lateral flow test (LFT), you should read the directions on the package as everyone is different and some are made by different manufacturers.

However, one of the most important instructions on most packages is that you should wait 30 minutes after eating or drinking to take the test.

This is due to the fact that some foods and drinks, such as B. water and sodas, can interfere with the test.

An NHS doctor, Dr. Karan Rajan has now explained why tap water and other beverages can give you a positive result in your tests.

He’s taken to TikTok to share why consuming a few drinks might land you with a false positive. The doctor shares a video of how the tests can be influenced.

A TikTok doctor has shared how some drinks can give false positives on Covid lateral flow tests

Rajan said, “First we need to look into the lateral flow device. This gray box and the part just above it contain antibodies sensitive to the Covid-19 virus.

“If you use things like soda, tap water, and fizzy drinks, it creates an altered pH that interferes with how the antibodies on the test line work.

“That’s why you need to use this buffer solution (consisting of 99.7 percent saline) that provides a stable pH that the test actually works with.”

London-based A&E doctor Nathan posted a photo of a vaguely positive lateral flow on Instagram and explained what it could mean.

He said: “Essentially if *any* line appears before the end of the interpretation window (see package insert, this is usually 30 minutes) then this is a *positive* test and you need to isolate and book a PCR.

“However, if a line appears *after* the interpretation window, it does NOT count as a positive test. You do not have to isolate or book a PCR.”

But if you have symptoms, regardless of the lateral flow test result, consider isolating and booking a PCR test.

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