News & Topics

Jan 29, 2024

Detecting Three Types of Antigens in Just Five Minutes

Launching the SARS-CoV-2/Flu (Types A/B)Diagnostic Kit
Helping Reduce Bottlenecking in Medical Settings by Shortening Test Times

On January 10, 2024, ARKRAY, Inc. (hereinafter "ARKRAY", headquarters located in Kamigyo-ku, Kyoto) launched the "Primal Screen®SARS-CoV-2/Flu" (manufactured by ADTEC Co., Ltd.), an in vitro diagnostic product that simultaneously measures influenza virus antigens and SARS-CoV-2 antigens. This product makes it possible to measure three types of antigens (SARS-CoV-2 and influenza virus (types A/B))in just five minutes. This kit can help reduce bottlenecking in medical settings by shortening testing time.

Primal Screen®SARS-CoV-2/Flu is a diagnostic kit that simultaneously measures three types of antigens , SARS-CoV-2 and influenza virus (types A/B) in five minutes using a nasopharyngeal or nasal swab as the sample.

This product has been designed by adopting the new form, "sealed dipping". It is an advanced form of the "dipping" and does not require the user to dispense drops of samples. The "dipping" type, which involves a test stick to be inserted into the extracted sample, does not require any dispensing of the sample,making testing simple and easy.On the other hand, it has the disadvantage of the sample being prone to adhering to fingers and other such surfaces, due to the exposed result window.

The "sealed dipping" model however, resolved this flaw by covering the result window with a case, while still keeping the benefits of the "dipping" format. In addition, by sealing the test stick with an attached tube cap, infection due to sample spillage or leakage is prevented.

The test result is determined by the presence or absence of a line that appears in the result window of the test stick after it has been inserted into the sample and left to stand for five minutes. The multi-colored result window makes it easy to determine the results for the three types of antigens.


ARKRAY provides diagnostic tools for a variety of infectious diseases, including the novel coronavirus infections. ARKRAY will continue to rise to the needs of medical institutions by expanding our product lineup of diagnostic items for infectious diseases.

SARS-CoV-2 and Influenza Virus Diagnostic Kits Comparison Table:

Product name Primal Screen®
Product A Product B Product C Product D
Time to
5 minutes 15 minutes 10 minutes 15 minutes 10 minutes
Dipping Two-point

Product Overview

Name Primal Screen®SARS-CoV-2/Flu
Intended use Detection of SARS-CoV-2 antigens, influenza Type A virus antigens and
influenza Type B virus antigens on nasopharyngeal or nasal swab (to assist in
the diagnosis of SARS-CoV-2 infections or influenza virus infections)
Test object Nasopharyngeal or nasal swab
Time to results 5 minutes (approx.)
Testing principle Immunochromatography
Storage method Room temperature (1 to 30°C)
Shelf life 12 months (expiration date is listed on the outer packaging)
Product classification In vitro diagnostics. Marketing Authorization No.: 30400EZX00011000
Sales price JPY 29,500 (excluding tax)

This product will be distributed by ARKRAY Marketing, Inc. ARKRAY Marketing, Inc. is ARKRAY's distributor in Japan.