Service to our clients is provided from our Headquarters and principal laboratories in Troy, as well as from our branch offices and laboratories in Ann Arbor and Detroit, Michigan.

Troy:
1343 Rochester Road
Troy, Michigan 48099-0249
248-588-6200
Fax: 248-588-6232
Mapquest Map

Ann Arbor:
858 Phoenix Drive
Ann Arbor, Michigan 48108
734-971-0030
Fax: 734-971-3721
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Detroit:
601 West Fort Street
Suite 440
Detroit, Michigan 48226
313-837-8464
Fax: 313-837-1305
Mapquest Map