21 C.F.R. § 866.6090
(b) Classification. Class II (special controls). The special controls for this device are:
(1) The labeling required under § 809.10 of this chapter and any pre-purchase page and test report generated, unless otherwise specified, must include:
(ii) A section addressed to users with the following information:
(iii) A section in the labeling required under § 809.10 of this chapter and any test report generated that is for healthcare professionals who may receive the test results from their patients with the following information:
(3) The device's labeling must include a hyperlink to the manufacturer's public website where the manufacturer must make the information identified in paragraph (b)(3) of this section publicly available. The manufacturer's home page, as well as the primary part of the manufacturer's website that discusses the device, must provide a hyperlink to the web page containing this information and must allow unrestricted viewing access. If the device can be purchased from the website or testing using the device can be ordered from the website, the same information must be found on the web page for ordering the device or provided in a publicly accessible hyperlink on the web page for ordering the device. Any changes to the device that could significantly affect safety or effectiveness would require new data or information in support of such changes, which must also be posted on the manufacturer's website. The information must include:
(iii) A section that highlights summary information that allows the user to understand how the test works and how to interpret the results of the test. This section must, at a minimum, be written in plain language understandable to a lay user and include:
(C) Materials that explain the main concepts and terminology used in the test that include:
(1) Definitions: scientific terms that are used in the test reports.
(2) Pre-purchase page: this page must contain information that informs the user about what information the test will provide. This includes variant information, the condition(s) or disease(s) associated with the variant(s), professional guideline recommendations for general genetic risk testing, the limitations associated with the test (e.g., test does not detect all variants related to the disease), relevance of race/ethnicity, and any precautionary information about the test the user should be aware of before purchase. When the test reports the risk of a life-threatening or irreversibly debilitating disease or condition for which there are few or no options to prevent, treat, or cure the disease, a user opt-in page must be provided. This opt-in page must be provided for each disease type that falls into this category and must provide specific information relevant to each test result. The opt-in page must include:
(i) An option to accept or decline to receive this specific test result;
(ii) Specification of the risk involved if the user is found to have the specific genetic test result;
(iii) Summary of professional guidelines that recommend when genetic testing for the associated target condition is or is not recommended;
(iv) A recommendation to speak with a healthcare professional, genetic counselor, or equivalent professional before getting the results of the test;
(v) The implications of receiving a no variants detected result; and
(vi) The statement that the test does not diagnose cancer or any other health conditions and should not be used to make medical decisions. Results should be confirmed in a clinical setting before taking any medical action. Users should consult with a healthcare professional before taking any medical action.
(3) Frequently asked questions (FAQ) page: This page must provide information that is specific for each variant/disease pair that is reported. Information provided in this section must be scientifically valid and supported by corresponding peer-reviewed publications. The FAQ page must explain the health condition/disease being tested, the purpose of the test, the information the test will and will not provide, the relevance of race and ethnicity to the test results, information about the population to which the variants in the test is most applicable, the meaning of the result(s), other risk factors that contribute to disease, appropriate follow-up procedures, how the results of the test may affect the user's family, including children, and links to resources that provide additional information.
(4) The device labeling must include a technical information section containing the following information:
(iii) Scientifically established disease-risk association of each variant detected and reported by the test. This risk association information must include:
(D) A statement about the current professional guidelines for testing these specific gene(s) and variant(s) for the specified disease(s).
(1) If professional guidelines are available, provide the recommendations in the professional guideline(s) for the gene, variant, and disease for when genetic testing should or should not be performed, and cautionary information that should be communicated when a particular gene and variant is detected.
(2) If professional guidelines are not available, provide a statement that the professional guidelines are not available for these specific gene(s) and variant(s).
(xii) Information that demonstrates the performance characteristics of the test including:
(A) Accuracy of study results for each claimed specimen type.
(1) Accuracy of the test must be evaluated with fresh clinical specimens collected and processed in a manner consistent with the test's instructions for use. If this is impractical, fresh clinical samples may be substituted or supplemented with archived clinical samples. Archived samples must have been collected previously in accordance with the instructions for use, stored appropriately, and randomly selected. In some limited circumstances, use of contrived samples or human cell line samples may also be appropriate and used as an acceptable alternative. The contrived or human cell line samples must mimic clinical specimens as much as is feasible and provide an unbiased evaluation of the test's accuracy.
(2) Accuracy must be evaluated by comparison to bidirectional Sanger sequencing or other methods identified as appropriate by FDA. Performance criteria for both the comparator method and the test must be pre-defined and appropriate to the test's intended use. Detailed study protocols must be provided.
(3) Information provided must include the number and type of specimens, broken down by clinically relevant variants for each indicated report that were compared to bidirectional sequencing or other methods identified as appropriate by FDA. The accuracy as positive percent agreement (PPA) and negative percent agreement (NPA) must be measured, and accuracy point estimates must be >99 percent (both per reported variant and overall). Uncertainty of the point estimate must be within an acceptable range, as identified by FDA, and must be presented using the 95 percent confidence interval.
(4) Sufficient specimens must be tested per genotype and must include all genotypes that will be included in the tests and reports. The number of samples tested in the accuracy study for each variant reported must be based on the variant frequency.
(5) Any no calls (i.e., absence of a result) or invalid calls (e.g., failed quality control) in the study must be included in accuracy study results and reported separately. The percent of final 'no calls' or 'invalid calls' must be clinically acceptable. Variants that have a point estimate for PPA or NPA of <99 percent (incorrect test results compared to bidirectional sequencing or other methods identified as appropriate by FDA) must not be incorporated into test claims and reports. Accuracy measures generated from clinical specimens versus contrived samples or cell lines must be presented separately. Results must be summarized and presented in tabular format, by sample and by genotype.
(6) Point estimate of PPA for each genotype must be calculated as the number of correct calls for that genotype divided by the number of samples known to contain that genotype. The point estimate of NPA for each genotype must be calculated as the number of correct calls that do not contain that genotype divided by the number of samples known to not contain that genotype. 'No calls' must not be included in these calculations. Point estimates must be calculated along with 95 percent two-sided confidence intervals.
(xiii) Clinical Performance Summary.
(xiv) User comprehension study: information on a study that assesses comprehension of the test process and results by potential users of the test must be provided, including the following, as appropriate:
(D) The user comprehension study must meet the following criteria:
(1) The study participants must comprise a statistically sufficient sample size and demographically diverse population (determined using methods such as quota-based sampling) that is representative of the intended user population. Furthermore, the study participants must comprise a diverse range of age and educational levels and have no prior experience with the test or its manufacturer. These factors must be well-defined in the inclusion and exclusion criteria.
(2) All sources of bias (e.g., non-responders) must be predefined and accounted for in the study results with regard to both responders and non-responders.
(3) The testing must follow a format where users have limited time to complete the studies (such as an on-site survey format and a one-time visit with a cap on the maximum amount of time that a participant has to complete the tests).
(4) Users must be randomly assigned to study arms. Test reports in the user comprehension study given to users must define the target condition being tested and related symptoms, explain the intended use and limitations (including warnings) for the test, explain the relevant ethnicities in regard to the variant tested, explain genetic health risks and relevance to the user's ethnicity, and assess participants' ability to understand the following comprehension concepts: the test's limitations, purpose, appropriate action, test results, and other factors that may have an impact on the test results.
(5) Study participants must be untrained, be naïve to the test subject of the study, and be provided the labeling prior to the start of the user comprehension study.
(6) The user comprehension study must meet the predefined primary endpoint criteria, including a minimum of a 90 percent or greater overall comprehension rate (i.e., selection of the correct answer) for each comprehension concept. Other acceptance criteria may be acceptable depending on the concept being tested. Meeting or exceeding this overall comprehension rate demonstrates that the materials presented to the user are adequate for over-the-counter use.
(7) The analysis of the user comprehension results must include:
(i) Results regarding reports that are provided for each gene/variant/ethnicity tested;
(ii) Statistical methods used to analyze all data sets; and
(iii) Completion rate, non-responder rate, and reasons for nonresponse/data exclusion. A summary table of comprehension rates regarding comprehension concepts (e.g., purpose of test, test results, test limitations, ethnicity relevance for the test results, appropriate actions following receipt of results) for each study report must be included.
[90 FR 40718, Aug. 21, 2025]