Immunoassay Ag Test Kit

Immunoassay Ag Test Kit

Product Details:

Place of Origin: China
Brand Name: Vchek

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Minimum Order Quantity: negotiable
Price: negotiable
Delivery Time: 10-15days
Payment Terms: T/T, Western Union
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Detail Information

Sample Type:: Saliva Key Words: IFU EN 2019 NCoV 19 Saliva Ag EASY Test
Storage:: Room Temperature Accuracy:: 99.9%
Using:: Self Test Detection: Nucleocapsid Protein Antigen From 2019 NCoV
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Immunoassay Ag Test Kit


SARS-CoV-2 Ag Test Kit

Product Description

IFU EN 2019 NCoV 19 Saliva Ag EASY Test

Whistling Test .pdf



This test kit is a rapid chromatographic immunoassay for semi-quantitative detection of neutralization antibodies to SARS-CoV-2, in human serum or plasma. Neutralization antibodies bind specifically to a pathogen's proteins which are used to interact with and infect host cells, blocking their functional domains; this prevents the pathogen from being infectious, and grants the host 'sterilizing immunity'. This kit detects the presence of human antibodies against the SARS-CoV-2 virus's Receptor Binding Domain (RBD), on the viral spike protein (S), and can therefore be used to test for possible immunity.




SARS-CoV-2 Neutralization Antibody Detection Kit is a faster, easier, more scalable and automatable alternative to traditional neutralizing antibody tests, such as virus neutralization test (VNT), pseudo-virus neutralization test (pVNT) and plaque reduction neutralization test (PRNT). The kit has the capability of measuring functional neutralizing antibodies (NAbs) within an hour instead of the days required by the traditional tests. cPass Neutralization Antibody detection kit does not require live biological materials or strict biosafety containment for testing



This test uses double-antibody sandwich to legally detect the antigen of novel coronavirus (2019-nCoV) in saliva samples. During detection, the gold labeled anti-2019-nCoV monoclonal antibody in the labeling pad binds to the 2019-nCoV antigen in the sample to form a complex, and the reaction complex moves forward along the nitrocellulose membrane under the action of chromatography, it is captured by the anti-2019-nCoV monoclonal antibody pre-coated by the detection zone (T) on the nitrocellulose membrane, and finally a red color reaction line is formed in the T zone. If the sample does not contain 2019-nCoV antigen, a red color reaction line cannot be formed in the T zone. Regardless of whether the sample to be tested contains 2019-nCoV antigen, a red reaction line will always form in the quality control area (C).




Materials provided with the test



Ingredients Cassette Instructions for use Quick Reference Instructions
0674C4X001 1 1 NA
0674C4X002 2 1 NA
0674C4X005 3 1 1
0674C4X010 10 1 1
0674C4X020 20 1 1
0674C4X025 25 1 1


Materials required but not provided

  • Timer



  • Store the test as packaged between 2-30°C.
  • The Test stable until the expiration date printed on the outer packing, the product will be expired after 24 months.
  • Do not use beyond the expiration date.
  • Do not freeze any contents of the test
  • The test must remain in the sealed pouch until use.



Before test, please read the instructions carefully.

  • Take the cassette to equilibrate to room temperature.
  • Unpack the aluminum foil bag, take out the cassette.
  • Insert the absorber end of the cassette into mouth. Make sure cassette is horizontal statement.

Immunoassay Ag Test Kit 0

  • Actively swab the inside of the mouth and tongue to collect oral fluid.
  • Remove the absorber end from the mouth when the purple color move across the result window in the center of the test device.
  • Wait for 10 minutes and read the results.


*When sampling, gently hold it in mouth and let saliva naturally adsorb on the sponge.

*Do not eat, drink, or smoke prior to the test for at least 30 Minutes.

*Any saliva specimen is appropriate for testing but the saliva specimen collected in the morning, before mouth rinsed, eating or drinking, is recommended





This product can only perform qualitative analysis on the detection object.

Positive Result:

If both C and T lines are visible within 10 minutes, the test result is positive and valid.

Negative Result:

If test area (T line) has no color and the control area displays a colored line, the result is negative and valid

Invalid Result:

The test result is invalid if a colored line does not form in the control region. The sample must be re-tested, using a new test.


Immunoassay Ag Test Kit 1


The test contains a built-in internal control in the test card. A color band appearing in the control region (C) is designed as an internal control. The appearance of the control line confirms that sufficient flow has occurred, and that the test card is working normally. If the control line does not appear within 10 minutes, it is considered an error in the test result and it is recommended to test again with the same sample and a new device.



  • The result of the test should not be taken as a confirmed diagnosis, for clinical reference only. Judgement should be made along with RT-PCR results, clinical symptoms, epidemiological information, and further clinical data.
  • The Test performance depends on the amount of virus (antigen) in the sample and may or may not correlate with viral culture results performed on the same sample.
  • The test must be equilibrated to room temperature (18℃~26℃) before used, otherwise the results may be incorrect
  • A negative test result may occur if the level of antigen in a sample is below the detection limit of the test.
  • Failure to follow the Test Procedure may adversely affect test performance and/or invalidate the test result.
  • React less than 10 minutes may lead a false negative result; React more than 10 minutes may lead a false positive result.
  • Positive test results do not rule out co-infections with other pathogens.
  • Negative test results are not intended to rule in other viral or bacterial infections.
  • Negative results should be treated as presumptive and confirmed with a molecular assay.
  • Clinical performance was evaluated with fresh samples.
  • Users should test specimens as quickly as possible after specimen collection.



1. Clinical Verification

The performance of Test was established with 232 sample collected from symptomatic patients, who with symptoms onset within 7 days.


2019-nCoV Saliva Ag EASY TEST Comparative RT-PCR Test Result
  Positive (+) Negative (-) Total
Detected Positive 108 1 109
Detected Negative 7 116 123
Total 115 117 232
Sensitivity 93.91%, 95% CI (87.97,97.02)
Specificity 99.15%, 95% CI (95.32, 99.85)
Accuracy 96.55%, 95% CI (93.34, 98.24)


Positive results broken down by days since symptom onset:

Days since symptom onset RT-PCR Positive (+) 2019-nCoV Saliva Ag EASY CHECK PPA
1 13 13 100%
2 32 32 100%
3 52 51 98.08%
4 69 67 97.10%
5 86 83 96.51%
6 102 97 96.00%
7 115 108 93.91%


Positive results broken down by CT value:


2019-nCoV Saliva Ag EASY TEST Comparative RT-PCR Method
(Immunochromatography) (Positive by Ct Value)
  Positive (Ct<=25) Positive (25<Ct)
Detected Positive 69 39
Total 70 45
Positive agreement 98.57% 86.67%


2. Limit of Detection

The experimental results show that for the virus culture concentration above 100 TCID50/mL, the positive rate of detection is greater than or equal to 95%. For the virus culture concentration of 50 TCID50/mL and below, the positive rate of detection is lower than 95%. So, the limit of detection of the Test Card is 100 TCID50/mL.

3. Cross-reactivity

Cross-reactivity of the test card was evaluated. The results showed no cross reactivity with the following specimen.


5. Precision

1. Test 10 replicates of negative and positive by using the reference materials of enterprises. The negative agreement and the positive agreement were 100%.

2. Test three different lots kits including positive and negative reference materials of enterprises. The negative results and the positive results were 100%

6. Hook Effect

The Test Card was tested up to 1.6 × 105 TCID50/ml of heat-inactivated 2019-nCoV strain and no high-dose effect was observed.



  • For in vitro diagnostic use.
  • Use appropriate precautions in the collection, handling, storage, and disposal of patient samples and used test contents.
  • Use of Nitrile, Latex (or equivalent) gloves is recommended when handling patient samples.
  • Do not reuse the used Test Card or saliva swab.
  • Should never open the foil pouch of the Test Card exposing it to the ambient environment until the Test Card is ready for immediate use.
  • Discard and do not use any damaged or dropped Test Card or material.
  • Inadequate or inappropriate sample collection, storage, and transport may yield false test results.
  • Sample collection and handling procedures require specific training and guidance.
  • To obtain accurate results, do not use visually bloody or overly viscous samples.
  • To obtain accurate results, an opened and exposed Test Card should not be used.
  • Testing should be performed in an area with adequate ventilation.
  • Wear suitable protective clothing, gloves, and eye/face protection when handling the contents of this test.
  • Wash hands thoroughly after handling.


Immunoassay Ag Test Kit 2 Materials Included   Immunoassay Ag Test Kit 3 Test Cassette
Immunoassay Ag Test Kit 4Immunoassay Ag Test Kit 5 Instructions for Use   Immunoassay Ag Test Kit 6 Date of
Immunoassay Ag Test Kit 7 Consult Instructions   Immunoassay Ag Test Kit 8 Do Not Reuse
For Use
Immunoassay Ag Test Kit 9 Store at 2°C~30°C   Immunoassay Ag Test Kit 10Immunoassay Ag Test Kit 11 Catalogue Number
Immunoassay Ag Test Kit 12Immunoassay Ag Test Kit 13 Expiration Date   Immunoassay Ag Test Kit 14 Keep away from Sunlight
Immunoassay Ag Test Kit 15 Manufacturer   Immunoassay Ag Test Kit 16Immunoassay Ag Test Kit 17 Tests per Kit
Immunoassay Ag Test Kit 18Immunoassay Ag Test Kit 19 Lot Number   Immunoassay Ag Test Kit 20Immunoassay Ag Test Kit 21 In Vitro Diagnostic Medical Device
Immunoassay Ag Test Kit 22 Keep Dry      
Immunoassay Ag Test Kit 23 Guangzhou Decheng Biotechnology Co., LTD
Room 218, Building 2, No.68, Nanxiang Road, Science City, Huangpu District, 510000, Guangzhou P.R.China
Immunoassay Ag Test Kit 24 CMC Medical Devices & Drugs S.L. Immunoassay Ag Test Kit 25
C/ Horacio Lengo Nº 18, CP 29006,
Málaga, Spain


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