The UIDL Client Services and Billing teams are here to support healthcare professionals and our mutual patients with specimen collection and transport, orders and result reporting, and billing.

We are committed to providing an efficient and stress-free referral testing experience.

Contact information and hours of operation

Client Services

Available: 8:00 AM–5:00 PM, Monday–Friday

Billing

Available: 8:00 AM–4:30 PM, Monday–Friday

Holiday closures and deliveries outside of normal business hours

The UIDL Test Directory outlines specimen rejection criteria and testing schedules to help you plan specimen collection and transport. For questions and help with deliveries outside of our normal business hours, please contact the Specimen Control Call Center at 319-356-3527.

UIDL holiday closures

DateDayHoliday
December 25, 2025ThursdayUniversity Holiday
December 26, 2025FridayUniversity Holiday
January 1, 2026ThursdayFederal Holiday
January 19, 2026MondayFederal Holiday
May 25, 2026MondayUniversity Holiday
July 3, 2026FridayUniversity Holiday
September 7, 2026MondayFederal Holiday
November 26, 2026ThursdayUniversity Holiday
November 27, 2026FridayUniversity Holiday
December 24, 2026ThursdayUniversity Holiday
December 25, 2026FridayUniversity Holiday