11283 Schaefer Drive
Maryland Heights, Missouri 63043
1050 North Lindbergh Boulevard
Saint Louis, Missouri 63132
7:00 AM - 3:30 PM Monday thru Friday (excluding County recognized holidays)
Sample Drop-off Hours:
7:30 AM - 2:30 PM Monday thru Friday (excluding County recognized holidays)
Once your letter is on file in our office, samples may be submitted for testing. Test report forms, which will be distributed by this office, should accompany the sample.