For Mail and Deliveries to the Lab:

We are open to receive mail packages any day that USPS delivers, including Saturdays! We do not receive mail on mail holidays. 
To view the Post Office’s holiday delivery schedule, visit their website (link below for 2018-19):
– FedEx 2018 holidays:
– UPS 2018 holidays:


Lab Reporting and Customer Service Days: 

Customer service and lab reporting days are Monday – Friday 8:30am – 5:30pm CST, unless noted. Holidays falling over a weekend are observed on the closest Friday or Monday to said holiday.
We are closed on these holidays: 
– New Year’s Day*
– Memorial Day 
– Independence Day*
– Labor Day 
– Thanksgiving Day* & day after
– Christmas Day*
*Note: customer service and lab reporting typically close around 12pm CST on the day preceding these holidays.