20:04:27:13.13Maximum threshold for Phenylbutazone.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Rulemaking activity
The maximum authorized threshold for Phenylbutazone, otherwise known as bute, is 2.0 micrograms per milliliter of plasma or serum when administered in accordance with Controlled Therapeutic Medication Schedule Version 4.2.1 dated December, 2020 and § 20:04:27:14.
Source: 50 SDR 15, effective August 13, 2023; 51 SDR 16, effective August 18, 2024.