The Horseracing Integrity and Safety Authority (HISA) is seeking public comment on proposed modifications to the Rule Series 6000 (Equine Standards for Laboratories and Accreditation) of its Anti-Doping and Medication Control (ADMC) Program, according to a press release from the regulator on Tuesday.The proposed modifications build on HISA's ongoing review of the ADMC Program. Last November, HISA distributed for public comment proposed modifications to Rule Series 1000, 3000 and 4000, and in January, sought comment for Rule Series 5000 and 7000. Comments received in response to these Rule Series are under review.The proposed updates to Rule Series 6000 of the ADMC Program include enhanced laboratory accreditation standards, expanded laboratory oversight and more.A memorandum summarizing the proposed modifications is available here. A full draft of the proposed revisions in PDF redline format is available here. The redline reflects proposed updates compared to the version currently in effect and approved by the Federal Trade Commission (FTC).HISA invites all interested parties to review the proposed modifications and submit comments by Tuesday, July 14, 2026. Comments should be sent to HISA General Counsel Sam Reinhardt at Samuel.Reinhardt@hisaus.org with the subject line “Proposed Rule Modifications–Rule Series 6000.” Alternatively, comments may be mailed to HISA at 201 East Main Street, Suite 340, Lexington, KY 40507.Following the expiration of the public comment period, the ADMC Committee, in consultation with the Horseracing Integrity & Welfare Unit, will review and consider all relevant feedback before recommending proposed modifications to the HISA Board. If approved by the HISA Board, the proposed modifications would then be submitted to the FTC.The post HISA Opens Comment Period On Proposed Updates To Lab Rules appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.