Adventist Health, Roseville, CA http://www.adventisthealth.org/
Alegent Health, Omaha, NE http://www.alegent.com/
Alverno Clinical Laboratories, Hammond, IN http://www.alvernoclinicallabs.com/
Baptist Health System, San Antonio, TX http://www.baptisthealth.org/
Baptist Health South Florida, Miami, FL http://www.baptisthealth.net/
Carolinas HealthCare System, Charlotte, NC http://www.carlinashealthcare.org/
CaroMont Health System, Gastonia, NC http://www.caromont.org/
CBLPath, Inc., Poughkeepsie, NY http://www.cblpath.com/
Chesapeake General Hospital, Chesapeake, VA http://www.chealth.org/
CHRISTUS St. Joseph Hospital, Houston, TX http://www.christusstjoseph.org/
Duke University Health System, Durham, NC http://www.dukehealth.org/
Eisenhower Medical Center, Rancho Mirage, CA http://www.emc.org/
Fairview Health System, Minneapolis, MN http://www.fairview.org/
Geisinger Health System, Danville, PA http://www.geisinger.org/
Grenada Lake Medical Center, Grenada, MS http://www.glmc.net/
Haverford Healthcare Advisors http://www.haverfordhealthcare.com/
Henry Ford Health System, Detroit, MI http://www.henryford.com/
Joint Venture Hospital Laboratories, Detroit Metro, MI http://www.jvhl.org/
Kaiser Foundation Health Plan, Inc., Oakland, CA http://www.kp.org/
Life Laboratories, Mercy Hospital, Springfield, MA http://www.mercycares.com/pages.asp?id=511
MDS Pharma Services--Central Laboratory, Mississauga, Ontario http://www.mdsps.com/
Memorial Hermann Health System, Houston, TX http://www.memorialhermann.org/
Pecot and Padgett, APMC. Opelousas, LA 337-948-8206
PhenoPath Laboratories, Seattle, WA http://www.phenopath.com/
ProMedica Health System, Toledo, OH http://www.promedica.org/
Premier, Inc., Charlotte, NC http://www.premierinc.com/
Provena Health/MedCentre Laboratories, Mokena, IL http://www.provenahealth.com/
Resurrection Health Care, Chicago, IL http://www.reshealth.org/
Royal Shrewsbury Hospital, Shropshire, United Kingdom http://www.rsh.org.uk/
Salem Community Hospital http://salemhosp.com
Sansum Clinic, Santa Barbara, CA http://www.sansum.com/
St. John Health, Detroit, MI http://www.stjohn.org/
St. Joseph Medical Center, Houston, TX http://www.sjmctx.com/
St. Jude Medical Center, Fullerton, CA http://www.stjudemedicalcenter.org/
Sister of St. Francis Health System, Mishawaka, IN http://www.ssfhs.org/
The University of Texas Medical Branch at Galveston http://www.utmb.edu/
TriCore Laboratories, Inc., Albuquerque, NM http://www.tricore.org/
University of Illinois at Chicago http://www.uic.edu/
White Memorial Medical Center, Los Angeles, CA http://www.whitememorial.com/