BetaCoronavirus Sars-Cov-2 Neutralization Antibody Test Immunochromatography
2019-NCoV Neutralizing Antibody Rapid Test (Immunochromatography)
Intended Use
Principle of Detection
Main Components
Test card: It is composed of aluminum foil bag, desiccant, test strip and plastic card. Among them, the test strip is composed of absorbent paper, nitrocellulose membrane, sample pad,binding pad and rubber sheet. The nitrocellulose membrane T line (test line) is coated
Storage Conditions and Validity
Sample Requirements
1.Collect serum, plasma or whole blood samples.
2.The sediment and suspended matter in the sample may affect the experimental results, andshould be removed by centrifugation.
3. Anticoagulant: Heparin, EDTA and sodium citrate anticoagulant have no significant effect.
4. Blood collection should be performed by professional medical personnel. It is recommended to give priority to serum/plasma test. In emergency or special circumstances, the patient's whole blood sample can also be used for rapid test.
5. Serum and plasma samples should not be stored at room temperature for more than 8h. They can be stored for 5 days at 2℃ to 8℃ and for 6 months below -20℃, but repeated freeze-thaw cycles should be avoided. Whole blood samples should not be frozen and it should be stored at 2℃~8℃ for no more than 48h
Test Method
Read the instructions carefully before testing. Please return all reagents to room temperature before testing, and the test should be performed at room temperature.
1.Take out the test card from the packaged reagent bag and use it within an hour.
2.Add 20μL of sample (serum, plasma or whole blood) to the loading well of the test card, then add 2 drops (about 60μL) of sample buffer and then start timing.
3. Read the result when reacting at room temperature for 10-15 minutes. The result is invalid after 20 minutes
Interpretation of Test Results
Interpretation of test card:
- Invalid result: It is invalid with no reaction line on the quality control line (C line), and the test should be carried out again.
- Negative result: A red band appears on the test line (T line), and the color rendering is higher than or equal to the reference line (R line), and the quality control line (C line) and reference line (R line) are colored.
- Positive result: No red band appears on the test line (T line), or the red band on the test line (T line) is less coloring than the reference line (R line), and the quality control line (C line) and the reference line (R Line) are colored.
Limitation of Test Method
- This kit is for qualitative detection and is only used for in vitro auxiliary diagnosis.
- Make sure to add an appropriate amount of sample for test. Too much or too little sample volume may result in inaccurate results.
- Hemolysis, lipemia, jaundice and contaminated samples may affect the test results, and these samples should be avoided.
- The test results of this reagent are for clinical reference only, and should not be used as the sole basis for clinical diagnosis and treatment. The final diagnosis of the disease should be made after a comprehensive evaluation of all clinical and laboratory results.
Product Performance Indicators
1.Analysis of specificity
1.1Cross reaction: The following types of antibodies were evaluated for interference with reagents, and the results showed no cross-reaction.
| SN | Item | Cross reaction | SN | Item | Cross reaction |
| 1 | Endemic human coronavirus OC43 | No | 10 | Enterovirus | No |
| 2 | Endemic human coronavirus HKUI | No | 11 | EB virus | No |
| 3 | Endemic human coronavirus NL63 | No | 12 | Measles virus | No |
| 4 | Endemic human coronavirus 229E | No | 13 | Human cytomegalovirus | No |
| 5 | Influenza A virus | No | 14 | Rotavirus | No |
| 6 | Influenza B virus | No | 15 | Norovirus | No |
| 7 | Respiratory syncytial virus | No | 16 | Mumps virus | No |
| 8 | Adenovirus | No | 17 | Varicella-zoster virus | No |
| 9 | Rhinovirus | No | 18 | Mycoplasma pneumoniae | No |
1.2Interfering substances: The following concentrations of substances were added to the samples at the specified concentrations to evaluate their potential interference in 2019-nCoV neutralization Ab test project. The results showed that all kinds of interfering substances did not interfere with the test results of this reagent.
| Interfering substances | Concentration | Interfering substances | Concentration |
| Bilirubin | ≤50mg/dL | Triglycerides | ≤15mmol/mL |
| Hemoglobin | ≤5g/L | Cholesterol L | ≤500mg/d |
| Rheumatoid factor | ≤500IU/mL | Human total IgG | ≤14mg/mL |
| Ribavirin | 0.4mg/mL | Fluticasone | 0.5mg/mL |
| Oxymetazoline | 10mg/mL | Dexamethasone | 5 mg/mL |
| Histamine hydrochloride | 10mg/mL | Triamcinolone acetonide | 5mg /mL |
| Tobramycin | 1mg/mL | Levofloxacin | 0.2 mg/mL |
| Oseltamivir | 1mg/mL | Azithromycin | 0.1 mg/mL |
| Zanamivir | 1mg/mL | Ceftriaxone | 0.4 mg/mL |
| Arbidol | 0.5mg/mL | Meropenem | 0.2 mg/mL |
2.Clinical study: Using the marketed 2019-nCoV IgG Ab detection reagent (colloidal gold method) as a comparison reagent, 120 positive samples and 300 negative samples were selected for testing. The results are summarized as follows:
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2019-nCoV IgG Ab detection reagent (colloidal gold method) |
Sum |
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| Positive | Negative | |||
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Positive | 115 | 5 | 120 |
| Negtive | 5 | 295 | 300 | |
| Sum | 120 | 300 | 420 | |
| Sensitivity | 95.83%, (95%CI: 90.62%~98.21%) | |||
| Specificity | 98.33%, (95%CI: 96.16%~99.29%) | |||
Precautions
- This product is only used for in vitro diagnosis.
- This product is disposable, which cannot be recycled and reused.
- Read the instructions carefully before operation, and carry out the experimental operation in strict accordance with the reagent instructions.
- Avoid conducting experiments in bad environmental conditions (the environments containing 84 disinfectant, sodium hypochlorite, high-concentration corrosive gases such as acid and alkali or acetaldehyde, and dust). Laboratory disinfection should be carried out after the experiment.
- All samples and used reagents should be regarded as potentially infectious substances and disposed of in accordance with local regulations.
- Reagents should be used within the validity period marked on the outer package. The test card should be used as soon as possible after being taken out of the aluminum foil bag to prevent moisture.
Logo interpretation
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Do not re-use |
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Store at 2℃~30℃ |
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Consult instructions for use |
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In vitro diagnostic medical device |
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Batch code |
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Use-by date |
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Keep dry |
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Keep away from sunlight |
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Authorized representative in the European Community |
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Manufacturer |
Basic Information
ZHONGXIU SCIENCE AND TECHNOLOGY CO.,LTD
Dingluan industrial zone ,Changyuan City,453400,P.R.CHINA Tel:+86-371-55016575
Email:zosbio@zosbio.com
Web:www.zosbio.com
SUNGO Europe B.V.
Olympisch Stadion 24, 1076DE Amsterdam, Netherlands
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