Contact Us Home / Contact Us Have a Question? Do you have a question and want to send us a message? Contact us below! Contact Form Name * Email * Phone Street Address City State Zip Code Questions or Comments I have a question regarding... Choose one General Information Billing Questions Other Choose the smiling face:* Choose the cloud:* Submit Sioux Falls, SD Location Phone: (605) 322-7200 Toll Free: (800) 6585474 Fax: (605) 322-7222 Hours of Operation Mon-Fri 8am-5pm CST All Locations View Locations Lab Client Services (605) 322-7212