New crown antigen detection extract contains drama poisonous fried objects?The truth is here

Take out the swab, collect samples, immerse the sample into the test tube

Take out the test card, drop the sample, read the result ...

Known as "in 15 minutes, you can learn the test results"

New crown antigen detection kit

Since its inception, it has received widespread attention.

But there are many "people" red right and wrong,

Various rumors about it,

It appears on the Internet every other time.

The sampling swab starts to start "recruitment",

Recently it was the turn of the sample extract.

Network transmission "The extraction tube of the antigen measurement

It contains toxicly sodium nitride, and it is easy to explode. "

Although the public is unfamiliar with sodium nitride,

But the words "toxic" and "explosion",

It still makes many people start anxiety.

They are worried about touching the liquid

It will cause damage to the body,

Some people are worried about discarding antigen to detect abandonment

It will cause hidden safety hazards.

"These claims are all alarmist."

Zhang Yan, a professor at the School of Pharmacy, Tianjin University

In an interview with a reporter, stated that

Although for anti -corrosion,

New crown antigen detection kits produced by some manufacturers

The sample extract contains sodium nitride,

But because it has been highly diluted and the content is very low,

Therefore, the harm is extremely small.

also,

When sodium nitride is in a water -based state,

There is no danger of explosion.

A kind of preservatives in the online material system

"Most of the new crown antigen detection kits

Mainly composed of most of the three parts,

They are samples and sample extraction solution

And sample extraction tube.

In addition, the box will contain a manual

Test cards, biological safety bags, etc. "

Zhang Yan introduced,

The role of the sample extraction solution is to crack the virus,

The antigen is fully released.

The ingredients of various sample extraction solution are roughly the same,

Generally contains biological buffer solutions

Surface active agents, purifying water and preservatives.

in,

The role of biological buffer solution is to maintain environmental conditions,

To ensure the integrity of biological activity,

That is the complete sample sample.

The main role of surfactants

It is a cracking virus to release the antigen.

"In order to ensure the sample extraction solution

Can be stored for a long time and do not deteriorate,

Producers will add preservatives in them,

Sodium nitride is one of the preservatives. "

Sodium nitrode also known as sodium nitride,

It is a kind of inorganic compound,

Indeed, it has certain toxicity,

But when adding it to the sample extraction solution,

Already diluted high,

Therefore, the content is very low.

If you accidentally put the solution

Contact skin or eyes,

Rinse with a lot of water immediately.

Although there is no flammability of sodium nitride,

But it is explosive.

Sodium nitride of solid shape is higher than its melting point

Under the temperature or severe vibration, the explosion can be decomposed.

When it is metal, acid and chloride solvents

When forming nitride,

There is also a danger of explosion.

"But in the new crown antigen detection extract tube,

Sodium nitride is in a water -based state,

There is no explosion risk at this time. "

Zhang Yan said.

Pay attention to standardized operation correctly

New crown antigen detection kits produced by different manufacturers,

It will be slightly different in the details of use,

But generally consistent,

The basic process is "three steps"

Wash your hands with flowing water or disinfection,

Read the supporting manual of the antigen detection reagent again

And antigen detection related precautions,

Check whether the antigen detection reagent is during the shelf life

Check the content of the nasal swab

Is there any lack or damage?

If the reagent expires or the reagent content

Lack should be replaced in time.

Finally, during the testing process,

Need to keep indoor temperature

Between 14 and 30 degrees Celsius,

The product preservation temperature should be between 2 and 30 degrees Celsius.

Step sample collection

First use the toilet paper to remove the nose and the head to give up slightly.

Then disassemble the nose swab outer packaging,

But to avoid the hand contact meter head.

Pay special attention at this time,

You need to hold one hand in one hand to stick to the side of the nostrils on one side,

The bottom of the lower nose is backward

Slowly penetrate 1 to 1.5 cm,

Rotate at least 4 times in the nasal cavity

The stay time is not less than 15 seconds.

Subsequent,

Repeat the same operation of the other nasal cavity with the same swab.

Over 14 years old,

You can sample your own nasal swab;

Age 2 to 14 years old,

It should be sampled by adults.

Step 3 antigen detection

The nose swab will be collected first

Put it in the sampling tube immediately,

The wound head rotates in the sample extraction solution for at least 30 seconds,

The head of the squeezing wall across the sample pipe is at least 5 times.

After squeezing the wound head liquid,

Back it out.

After the sampling tube is covered,

Drop the liquid vertically into the detection card sample hole.

Finally, wait for 15 minutes to observe the display results,

And use your mobile phone to take a photo in time, retain it,

The results displayed after 30 minutes have no clinical significance.

For waste treatment,

The antigen detection results of the observation staff

Whether negative or positive,

All after use detection items

They must be put in the biological safety bag,

Seal to the professional management personnel for processing after being sealed.

For non -isolated observer,

If the antigen detection results are negative,

The detection items can be packed in a sealed bag,

Treatment as general garbage;

If the antigen detection results are positive,

Then you need to use the sampling tube

Test cards and other items,

Give the medical institution when the personnel transfer

Treatment as a medical waste.

Zhang Yan reminded,

When the public uses the new crown antigen detection kit, the public

Be sure to follow the instructions strictly

The prompt step is operated.Source: Science and Technology Daily, CCTV News Video No.

Produced: Jing Ke

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