--- title: "Quest Diagnostics Locations in Castro Valley, CA | Vitals Vault" description: "Find 1 Quest Diagnostics locations in Castro Valley, California. Order Vitals Vault blood testing online from $99.00, then schedule your Quest blood draw in your dashboard. See hours and directions." canonical: "https://www.vitalsvault.com/locations/ca/castro-valley" last-updated: 2026-08-22 --- # Quest Diagnostics Locations in Castro Valley, CA | Vitals Vault > Find 1 Quest Diagnostics locations in Castro Valley, California. Order Vitals Vault blood testing online from $99.00, then schedule your Quest blood draw in your dashboard. See hours and directions. [California locations](https://www.vitalsvault.com/locations/ca) QUEST DIAGNOSTICS LOCATIONS # Lab locations in *Castro Valley* Browse addresses, hours, and directions for Quest Diagnostics locations near Castro Valley. Confirm current hours with Quest before visiting. **1**location ## No lab order yet? Order online and draw at the Castro Valley location below. Popular tests like CMP and TSH cost up to 70% less than Quest's own online prices. Single tests from $9.99, full-body panels from $99. [Choose your panel](https://www.vitalsvault.com/checkout) - Quest Diagnostics ## 20400 Lake Chabot Rd, Ste 101 Castro Valley, CA 94546View location ## Getting your blood drawn in Castro Valley Quest Diagnostics lists 1 patient service center in Castro Valley, California, in ZIP code 94546. Vitals Vault members order their tests online and have the blood drawn at this site; Quest collects the sample and sends it to a Quest laboratory. Opening times on file run from 7:00 AM to 4:00 PM. The site is closed on Saturdays, so plan a weekday visit. ### Draw sites in Castro Valley - [20400 Lake Chabot Rd, Ste 101](https://www.vitalsvault.com/locations/ca/castro-valley/20400-lake-chabot-rd-94546)20400 Lake Chabot Rd, Ste 101, Castro Valley, CA 94546.Hours: Monday–Friday: 7:00 AM – 4:00 PM; Saturday–Sunday: Closed.Phone: 510-881-1570.Finding it: We are located inside the Eden Medical Building. ### Before you go Fasting. Fasting depends on the tests in your order. Follow the preparation instructions provided for your panel, including how long to fast if required. During a required fast, Quest advises drinking only water. Ask your clinician about medications or supplements rather than changing them yourself. What to bring. Have your lab order or the electronic order details available, and bring photo identification. Keep your appointment confirmation handy if you booked ahead. Follow any additional instructions provided with your Vitals Vault order. ### Panels you can have drawn in Castro Valley Any Vitals Vault order can be drawn in Castro Valley. Essential covers 120+ lab tests for $99, Advanced covers 140+ lab tests for $199, and Max covers 160+ lab tests for $399. You can also build your own panel from single tests. A $19 lab visit fee applies to lab orders under $99, and it is shown at checkout before you pay. After checkout, choose a Castro Valley site and a time in your dashboard. ### Other draw sites nearby If no Castro Valley time works for you, the closest site outside the city is 13847 E 14th St, Ste 111 in San Leandro, 3.3 miles away from the nearest Castro Valley site. These are the nearest draw sites by straight-line distance. - [13847 E 14th St, Ste 111](https://www.vitalsvault.com/locations/ca/san-leandro/13847-e-14th-st-94578)San Leandro, CA 94578, 3.3 miles away - [1 Southland Mall Dr, Suite 718](https://www.vitalsvault.com/locations/ca/hayward/1-southland-mall-dr-94545)Hayward, CA 94545, 3.3 miles away - [2505 San Ramon Valley Blvd](https://www.vitalsvault.com/locations/ca/san-ramon/2505-san-ramon-valley-blvd-94583)San Ramon, CA 94583, 8.0 miles away - [5720 Stoneridge Mall Rd, Suite 110](https://www.vitalsvault.com/locations/ca/pleasanton/5720-stoneridge-mall-rd-94588)Pleasanton, CA 94588, 8.5 miles away - [2111 Whitehall Pl, Suite D](https://www.vitalsvault.com/locations/ca/alameda/2111-whitehall-pl-94501)Alameda, CA 94501, 10.2 miles away - [2191 Mowry Ave, Suite 500B](https://www.vitalsvault.com/locations/ca/fremont/2191-mowry-ave-94538)Fremont, CA 94538, 11.2 miles away - [All Quest draw sites in California](https://www.vitalsvault.com/locations/ca) ALREADY DECIDED? ## Pick a location after you sign up. You don’t need to choose now. Sign up first — once you’re a member, book an appointment or walk in at any partner location. [Choose your panel](https://www.vitalsvault.com/checkout?mode=build-your-own-panel) --- Canonical HTML: https://www.vitalsvault.com/locations/ca/castro-valley - [llms.txt](https://www.vitalsvault.com/llms.txt) - [sitemap.xml](https://www.vitalsvault.com/sitemap.xml) - [Developer portal](https://www.vitalsvault.com/developers)