49 CFR 40.111
When and how must a laboratory disclose statistical summaries and other information it maintains?
(a)As a laboratory, you must transmit an aggregate statistical summary, by employer, of the data listed in appendix D of this part with respect to each specimen type for which you conduct tests to the employer on a semi-annual basis.#
(1)The summary must not reveal the identity of any employee.#
(2)In order to avoid sending data from which it is likely that information about an employee's test result can be readily inferred, you must not send a summary if the employer has fewer than five aggregate tests results.#
(3)The summary must be sent by January 20 of each year for July 1 through December 31 of the prior year.#
(4)The summary must also be sent by July 20 of each year for January 1 through June 30 of the current year.#
(b)When the employer requests a summary in response to an inspection, audit, or review by a DOT agency, you must provide it unless the employer had fewer than five aggregate test results. In that case, you must send the employer a report indicating that not enough testing was conducted to warrant a summary. You may transmit the summary or report by hard copy, fax, or other electronic means.#
(c)You must also release information to appropriate parties as provided in §§ 40.329 and 40.331.#
(d)As a laboratory, you must transmit an aggregate statistical summary listed in appendix E of this part for each specimen type for which you conduct testing to DOT on a semi-annual basis. The summary must be sent by January 31 of each year for July 1 through December 31 of the prior year. It must be sent by July 31 of each year for January 1 through June 30 of the current year. If you withdraw or are removed from NLCP's laboratory certification during a reporting period, you must provide the aggregate statistical summary to the DOT-regulated employers and to ODAPC for the last reporting period in which you conducted DOT-regulated testing.#