Quest Diagnostics

420 E 3rd St Ste 802, Los Angeles, CA 90013
Mo 8:30-12:30, Tu 8:30-12:30, We 13:30-17:00, Fr 8:30-12:30, Sa 8:30-12:30
HOURS: Today: 8:30 am - 12:30 pm
Monday 8:30 am - 12:30 pm, 1:30 pm - 5pm
Tuesday 8:30 am - 12:30 pm
Wednesday 1:30 pm - 5pm
Thursday Closed
Friday 8:30 am - 12:30 pm, 1:30 pm - 5pm
Saturday 8:30 am - 12:30 pm, 1:30 pm - 5pm
Sunday Closed

(213) 687-8758 Directions Website
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Quest Diagnostics is driven to discover and deliver diagnostic insights and innovations that help to improve human health. We offer a wide range of products and services that benefit patients, healthcare providers, and pharmaceutical medical device companies, life insurance companies and employers.


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