COVID-19 IgG/IgM Test (Colloidal Gold)

Basic requirements and procedures for self-testing of new coronavirus antigens

I. Basic requirements for self-testing of new coronavirus antigens
(1) Basic principles of new coronavirus antigen (hereinafter referred to as antigen) self-test suitable for quarantine observers and community residents. Among them, home isolation, close contact, and
Personnel in sub-close contact, entry isolation, observation, sealing, control areas, and control areas shall be in place.
Antigen self-testing is carried out under the organization and management of relevant management departments.
(2) Self-test instructions. Antigen testing is generally used in the acute infectious phase, i.e., suspected
samples that appear to be in people with symptoms within 7 days of testing. Suspected population antigen-positive and
Negative results should be tested for further nucleic acid testing, and a positive result can be used for pairing. early diversion and rapid management of suspected populations, but not as a COVID-19 infection.
The basis for the diagnosis. The selected antigen detection reagents shall be subject to the national drug supervision and management program.
The Department approved.
Second, the antigen self-test operation procedure
(1) preparation before antigen self-testing.
1. Wash your hands. Wash your hands with running water or hand sanitizer.
2. Understand the inspection process. Carefully read the antigen self-testing agent package manual and
Precautions related to antigen self-testing.
3. reagent preparation Check whether the antigen self-testing agent is within the shelf life, and check
Whether the contents of nasal swabs, sampling tubes, test cards, etc. are missing or broken. Try
The agent has expired or the reagent contents are missing or damaged, and the detection reagent should be replaced in time.
4. Confirm the environmental temperature and humidity requirements for the test. Colloidal gold test strip detection in general.
It is required to avoid excessive cold, excessive heat, or excessive humidity at a room temperature of 14°C–30°C.
The environment causes abnormal detection results. An antigen detection card is placed on the flat after unpacking,
Cleaning place
(2) Sample collection.
1. For those over the age of 14, nasal swabs can be taken by themselves. Self-tester
Blow off the snot with toilet paper first. Carefully unpack the nasal swab and avoid hand contact.
Touch the swab head. Then the head is slightly tilted, and one hand holds the swab on the tail and sticks one side of the nostril to enter,
Slowly go back 1-1.5 cm deep along the base of the lower nasal passage and rotate at least against the nasal cavity.
4 turns (stay at least 15 seconds), followed by the same swab against the other nose.
Repeat the same operation. This is shown in the following figure.
Figure: Schematic diagram of the antigen self-test process (refer to the specific kit instructions).
2. Self-testers aged 2–14 should be sampled by other adults. When sampling,
Blow your nose off with toilet paper and tilt your head slightly. The sampler carefully disassembles the nose.
The swab is wrapped on the outside. Avoid contact with the swab head with the hand, and gently support the head of the person being collected with one hand.
Enter with a swab in one hand and stick to one side of the nostril, slowly following the bottom of the lower nasal passage.
At least 1 cm deep, rotate the nasal cavity at least 4 times (stay for at least 15 seconds).
The same procedure is then repeated for another nasal cavity using the same swab.
(3) Antigen testing.
1. According to the reagent instructions, place the nasal swab immediately after the sample is collected.
In the tube, the swab head should be mixed in the stock solution for at least 30 seconds, while using
Squeeze the swab head by hand at least five times across the outer wall of the sampling tube to ensure that the sample is adequately eluted.
in a sampling tube.
2. Squeeze the swab head liquid dry by hand across the outer wall of the sampling tube, and discard the swab.
Go. After the sampling tube is covered, drop the liquid vertically into the test card sample well.
3. According to the reagent instructions, wait for a certain amount of time to interpret the results.
Positive result: red or purple bands are shown at both “C” and “T”.
The bands at the “T” can be dark or light in color and are all positive results.
Negative result: red or purple bands are shown at “C” and not at “T.”
It displays the stripe.
Invalid result: no red or purple band appears at “C”, regardless of “T.”
Whether the strip is displayed at the strip The results are invalid, and the test strip needs to be re-tested.
(4) Waste disposal.
1. Isolate observers. Test results, regardless of whether they are negative or positive, all make
After use of sampling swabs, sampling tubes, test cards, etc. into a sealed bag by the management staff
Refer to medical waste or dispose of it according to procedures.
2. Community residents Test negative for all nasal swabs after use,
Sampling tubes, detection cards, etc. are loaded into sealed bags and disposed of as general garbage;
If the result is positive, it will be handed over to the medical institution according to the medical waste at the time of transfer.
Dispose of