Devices

Biopolygen Corp.

FDA issued a warning letter to Biopolygen Corp. (Carson, CA, United States) on Jul 9, 2021. Subject: Adulterated and Misbranded Products Related to Coronavirus Disease 2019 (COVID-19).

From the letter: “The Covid-19 Self Detection Test Kits are offered for sale and distributed to consumers in the United States for self-testing without marketing approval, clearance, or authorization from FDA.”

Carson, CA, United StatesIssued Jul 9, 2021Posted Aug 10, 2021No close-out recorded

At a glance

What a reviewer notes before reading: findings, citations, the response deadline and what the letter warns of.

Violations
3 findings · 2 issue types
Cited
No CFR or ISO section
Response due
Not stated in the letter
FDA asks for
3 actions
Named as possible actions
Seizure, injunction
Issued by
Center for Devices and Radiological Health
Published status
No close-out recorded

AI assisted findings

Model-assisted reading of each issue. Open one to see the FDA text it comes from, and check it against the full letter.

01Registration, listing & premarketCOVID-19 test kits were sold without FDA marketing approval, clearance, or authorization, making them adulterated.
The Covid-19 Self Detection Test Kits are offered for sale and distributed to consumers in the United States for self-testing without marketing approval, clearance, or authorization from FDA. Accordingly, the products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have approved applications for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or approved applications for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g).
02Labeling, claims & marketingThe products were misbranded because the firm failed to provide required premarket notification under section 510(k).
Your products are also misbranded under section 502(o) of the Act, 21 U.S.C. § 352(o), because your firm did not notify the agency of its intent to introduce the devices into commercial distribution, as required by section 510(k) of the Act, 21 U.S.C. § 360(k).
03Labeling, claims & marketingWebsite claims promoted unapproved self-testing for COVID-19, including accuracy, convenience, and early prevention/treatment.
Your website (noted above), includes statements indicating that the COVID-19 Self Detection Test Kits may be purchased directly by consumers and are intended to be used for self-testing for COVID-19, including: - "ACCURACY BUT FAST, EFFICIENT; ANYTIME, ANYWHERE AT YOUR PRIVACY AND CONVENIENCE." [https://www.biopolygen.com/shop/-Covid-19-antigen/c-p778] - "INSTANT AND EASY ACCESS TO SCREENING CAN BE LIFE OF[sic] DEATH. SCREENING FOR YOURSELF AND YOUR FAMILY TODAY AND REPEAT THE ROUTINE SCREENINGS TO PROTECT YOURSELF." [https://www.biopolygen.com/shop/-Covid-19-antigen/c-p778] - A photograph of the "COVID-19 Antigen and Antibody Combo Set" includes the following language: "SELF-SCREENING METHOD FOR EALRY PREVENTION AND EARLY TREATMENT." [https://www.biopolygen.com/shop/-Covid-19-antigen-antibodycombination/c-p783]

What FDA requested

  • Send an email to COVID-19-Task-Force-CDRH@fda.hhs.gov within 48 hours describing the specific steps taken to address the violations, including an explanation of each step to prevent recurrence and copies of related documentation.
  • If unable to take action within 48 hours, state the reason for the delay and the time within which action will be taken.
  • If believing products are not in violation, include reasoning and supporting information.

FDA Warning Letter

21 paragraphs · 1 section

Text as published on FDA.gov, retrieved Oct 16, 2026. Layout added for reading; the wording is FDA’s. View on FDA.gov (opens in a new tab)

1WARNING LETTER

13 paragraphs

Date: July 9, 2021 RE: Adulterated and Misbranded Products Related to Coronavirus Disease 2019 (COVID-19)

This is to advise you that the United States Food and Drug Administration (FDA) reviewed your website at the Internet address https://www.biopolygen.com on January 7, 2021, February 26, 2021, and June 30, 2021. The FDA has observed that your website offers the “COVIGEN AG-1 Covid-19 Self Detection Kit,” the “COVIDEX AB-1 Covid-19 Self Detection Kit,” and the “COVID-19 Antigen and Antibody Combo Set” (hereafter referred to collectively as “COVID-19 Self Detection Test Kits”) for sale in the United States. Based on our review, these products are intended for use in the mitigation, prevention, treatment, diagnosis, or cure of COVID-19[1] in people, and thus, are devices under section 201(h) of the Federal Food, Drug, and Cosmetic Act (the “Act”), 21 U.S.C. § 321(h).

The Covid-19 Self Detection Test Kits are offered for sale and distributed to consumers in the United States for self-testing without marketing approval, clearance, or authorization from FDA. Accordingly, the products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have approved applications for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or approved applications for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g). Your products are also misbranded under section 502(o) of the Act, 21 U.S.C. § 352(o), because your firm did not notify the agency of its intent to introduce the devices into commercial distribution, as required by section 510(k) of the Act, 21 U.S.C. § 360(k). The introduction or delivery for introduction of this product into interstate commerce is prohibited under section 301(a) of the Act, 21 U.S.C. § 331(a). In addition, it is a prohibited act under section 301(k) of the Act, 21 U.S.C. § 331(k), to do any act with respect to a device while the device is held for sale after shipment in interstate commerce and results in the device being misbranded.

There is currently a global outbreak of respiratory disease caused by a novel coronavirus that has been named “severe acute respiratory syndrome coronavirus 2” (SARS-CoV-2). The disease caused by the virus has been named “Coronavirus Disease 2019” (COVID-19). On January 31, 2020, the Department of Health and Human Services (HHS) issued a declaration of a public health emergency related to COVID-19 and mobilized the Operating Divisions of HHS.[2] In addition, on March 13, 2020, there was a Presidential declaration of a national emergency in response to COVID-19.[3] Therefore, FDA is taking urgent measures to protect consumers from certain products that, without approval, clearance, or authorization by FDA, claim to mitigate, prevent, treat, diagnose, or cure COVID-19 in people. As described below, you offer for sale products that are intended for use in the mitigation, prevention, treatment, diagnosis, or cure of COVID-19 in people. We request that you take immediate action to cease the sale of any unapproved, uncleared, and unauthorized products for use in the mitigation, prevention, treatment, diagnosis, or cure of COVID-19.

We also note that different and potentially serious public health risks are presented with specimen collection and testing in the home versus a healthcare setting. Risks may include, but are not limited to, whether a lay person has the ability to collect their specimen, run the test, and interpret the test result accurately. Your website (noted above), includes statements indicating that the COVID-19 Self Detection Test Kits may be purchased directly by consumers and are intended to be used for self-testing for COVID-19, including:

“ACCURACY BUT FAST, EFFICIENT; ANYTIME, ANYWHERE AT YOUR PRIVACY AND CONVENIENCE.” [https://www.biopolygen.com/shop/-Covid-19-antigen/c-p778]

“INSTANT AND EASY ACCESS TO SCREENING CAN BE LIFE OF[sic] DEATH. SCREENING FOR YOURSELF AND YOUR FAMILY TODAY AND REPEAT THE ROUTINE SCREENINGS TO PROTECT YOURSELF.” [https://www.biopolygen.com/shop/-Covid-19-antigen/c-p778]

A photograph of the “COVID-19 Antigen and Antibody Combo Set” includes the following language: “SELF-SCREENING METHOD FOR EALRY PREVENTION AND EARLY TREATMENT.” [https://www.biopolygen.com/shop/-Covid-19-antigen-antibodycombination/c-p783]

For more information about FDA’s regulation of devices used to mitigate, prevent, treat, diagnose, or cure COVID-19; frequently asked questions; and other helpful resources, visit our website at https://www.fda.gov/medical-devices/emergency-situations-medicaldevices/coronavirus-covid-19-and-medical-devices. In addition, the guidance titled “Policy for Coronavirus Disease 2019 Tests During the Public Health Emergency (Revised)”[4] provides information about FDA’s policies intended to help expand testing capacity by facilitating the development and use of COVID-19 tests during the public health emergency.

You should take immediate action to address the violations cited in this letter. This letter is not meant to be an all-inclusive list of violations that exist in connection with your products or operations. It is your responsibility to ensure that the products you sell are in compliance with the Act and its implementing regulations. We advise you to review your websites, product labels, and other labeling and promotional materials to ensure that you are not misleadingly representing your products as safe and/or effective for a COVID-19-related use for which they have not been approved, cleared, or authorized by FDA and that you do not make claims that adulterate or misbrand the products in violation of the Act. Within 48 hours, please send an email to COVID-19-Task-Force-CDRH@fda.hhs.gov describing the specific steps you have taken to address these violations. Include an explanation of each step being taken to prevent the recurrence of any violations, as well as copies of related documentation. Failure to adequately correct any violations may result in legal action, including, without limitation, seizure and injunction.

FDA is advising consumers not to purchase or use certain products that are not in compliance with FDA requirements and are being misleadingly represented as safe and/or effective for the mitigation, prevention, treatment, diagnosis, or cure of COVID-19. Your firm will be added to a published list on FDA's website of firms and websites that have received warning letters from FDA concerning the sale or distribution of COVID-19 related products in violation of the Act. This list can be found at https://www.fda.gov/consumers/health-fraud-scams/fraudulentcoronavirus-disease-2019-covid-19-products. Once you have taken actions to address the sale of your unapproved, uncleared, and unauthorized products for the mitigation, prevention, treatment, diagnosis, or cure of COVID-19, and any appropriate corrective actions have been confirmed by the FDA, the published list will be updated to indicate that your firm has taken such corrective actions.

This letter notifies you of our concerns and provides you with an opportunity to address them. If you cannot take action to address this matter completely within 48 hours, state the reason for the delay and the time within which you will do so. If you believe that your products are not in violation of the Act, include your reasoning and any supporting information for our consideration.

Please direct any inquiries to FDA at COVID-19-Task-Force-CDRH@fda.hhs.gov.

Sincerely, /S/

Timothy T. Stenzel, M.D., Ph.D. Director OHT7: Office of In Vitro Diagnostics and Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health

__________________________

[1] As explained below, there is currently an outbreak of a respiratory disease named “Coronavirus Disease 2019” (COVID-19).

[2] Secretary of Health and Human Services, Determination that a Public Health Emergency Exists (originally issued Jan. 31, 2020, and subsequently renewed), available at https://www.phe.gov/emergency/news/healthactions/phe/Pages/default.aspx.

[3] Proclamation on Declaring a National Emergency Concerning the Novel Coronavirus Disease (COVID-19) Outbreak (Mar. 13, 2020), available at https://trumpwhitehouse.archives.gov/presidential-actions/proclamationdeclaring-national-emergency-concerning-novel-coronavirus-disease-covid-19-outbreak/.

[4] Accessible at https://www.fda.gov/media/135659/download.

Citations and trends

Each 21 CFR section, ISO 13485 clause and issue type in this letter, how often it appears across all letters, and its trend by the year FDA issued the letters. 2026 runs to Nov 3, 2026, compared with the same dates last year. Select a row or a bar to see those letters in Letters. As cited in this historical letter, not a statement of current requirements.

This letter cites no 21 CFR section or ISO 13485 clause.

Issue types

Record details

Issuing center
Center for Devices and Radiological Health
Issuing office
Center for Devices and Radiological Health
Location
Carson, CA, United States
Letter posted date
Aug 10, 2021
Letter issue date
Jul 9, 2021
Addressed to
Not recorded
Inspection dates · model-assisted
Jan 7, 2021 to Jun 30, 2021
Response window
Not verified in this snapshot. Consult the original letter.
Record length
1,214 words · 0 recorded redactions
Published status
No published close-out
Original letter
View on FDA.gov (opens in a new tab)
Dataset last checked
Nov 11, 2026 · How this is built

A response window is not a calculated due date. Source excerpts are selected passages. Finding interpretations and categories are model-assisted. Verify the original letter before relying on a finding.

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