I am unaware of any specific regulations for the cleaning of lab coats. However, OSHA speaks to Personal Protective Equipment (PPE). QUoated for the reg: "It is important that PPE be: • Selected based upon the hazard to the worker; • Properly fitted and in some cases periodically refitted (e.g., respirators); • Conscientiously and properly worn; • Regularly maintained and replaced in accord with the manufacturer’s specifications; • Properly removed and disposed of to avoid contamination of self, others or the environment; and • If reusable, properly removed, cleaned, disinfected and stored.