Testing Locations » California » Irvine CA » Quest Diagnostics – Irvine 4950 Barranca Parkway Quest Diagnostics – Irvine 4950 Barranca Parkway Quest Diagnostics – Irvine 4950 Barranca Parkway4950 Barranca PkwySte 209Irvine, CA 92604-8648 United States Located at the corner of Barranca Pkwy and Creek Pkwy. Behind Carl’s Jr.
