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
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
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 card:
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:
2019-nCoV IgG Ab detection reagent (colloidal gold method) |
Sum | |||
Positive | Negative | |||
| 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%) |
| Do not re-use |
| Store at 2℃~30℃ |
| Consult instructions for use | | In vitro diagnostic medical device |
| Batch code | | Use-by date |
![]() | Keep dry | | Keep away from sunlight |
| Authorized representative in the European Community | | Manufacturer |
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