Testing Locations » California » Riverside CA » Quest Diagnostics – Riverside 4646 Brockton Quest Diagnostics – Riverside 4646 Brockton Quest Diagnostics – Riverside 4646 Brockton4646 Brockton AveSte 102Riverside, CA 92506-0103 United States Quantiferon collection after 200pmrnLocated on the 1st floor of the Raincross Medical Group building