Colligan Clinical Diagnostic Laboratory (CCDL)

Proudly doing our part to increase COVID-19 diagnostic testing capacity in Santa Cruz

Established as the Molecular Diagnostic Lab (MDL), thanks to the generous support of donors, we are now housed in a new lab and now use the name CCDL.


Beginning March 9, 2021, we will be located at 2300 Delaware Ave, Santa Cruz, CA 95060, at the corner of Delaware and Natural Bridges Drive:

  • Head north on Mission St./Highway 1, past Bay St./campus.

  • Turn left at Swift St.

  • Turn right at Delaware

  • Turn right at Natural Bridges Dr. then make a left into the first driveway.

As you approach the side of the building, look for a "CCDL Sample Drop-off" sign. Please wait there and call the lab for assistance: 831-459-5983

Carousel imageFive healthcare workers and lab technicians stand six feet apart in parking lot in front of health center door, wearing masksCarousel imageCarousel image


To help our Santa Cruz community by increasing testing capacity and providing a quick turn-around of testing results for populations vital to the recovery of Santa Cruz.

Established as a CLIA certified lab on May 1, 2020, we operate within the guidance and regulations put forward by the State of California, the County of Santa Cruz, the California Department of Public Health (CDPH), and the FDA. We are a non-profit, service oriented testing laboratory, dedicated to assisting the public sector in areas of need, including the uninsured and elderly populations, serving the UC Santa Cruz population to facilitate a return to education, learning and research, and supporting economic and community recovery.


Our normal business hours are Monday-Friday. We are closed Saturday-Sunday.

We are closed Thursday, November 11th in observance of Veteran's Day.

Hear more about how we started and what we are doing. Watch.

To qualify for testing at the CCDL, patients must be referred by a medical provider.

We are currently collaborating with medical providers that offer testing to underserved, at risk populations or UC Santa Cruz campus populations, including: Santa Cruz Community Health, Salud Para La Gente, UCSC Student Health Center, Santa Cruz County Jail and Santa Cruz Public Health. We are committed to providing testing for various local community medical providers and public service entities on a short term, immediate basis, to address emergency needs, and continue to pilot testing with several hospitals and organizations critical to the safety and recovery of Santa Cruz.

Please direct any additional questions to For general campus inquires about the campus COVID-19 response, please direct your questions to

We are grateful to our partners and our colleagues for helping us make a difference.


Q: I am a community member, and I need a COVID test. Where do I go?


Q: What type of test / methods do you use?

Answer: The lab uses the SARS-CoV-2 qPCR Multiplex assay. See validation information for details regarding this assay.

With regard to lab testing methods, human upper respiratory specimens for COVID-19 diagnostic testing are collected in Zymo Research DNA/RNA Shield viral inactivation buffer (Cat. #R1200-125). RNA is extracted using Zymo Research Quick-DNA/RNA™ Viral MagBead (Catalog Nos. R2140 & R2141) and the presence of SARS-CoV-2 viral RNA is detected with quantitative real time polymerase chain reaction (RT-qPCR) (TaqPath™ 1-Step RT-qPCR Master Mix, CG or TaqMan® Fast Virus 1-Step Master Mix (ThermoFisher)). Two primer and probe sets (N1 and N2) are used to specifically detect SARS-CoV-2 nucleocapsid (N) gene and one primer and probe set detecting human RNase P gene is used as control.

Q: How many tests are run per week?

Answer: We are capable of running over 3,000 COVID-19 PCR tests a week. Please visit the UCSC Covid Recovery website for additional information.

Q: Can I get tested at the UCSC Molecular Diagnostic Lab?

Answer: We are a laboratory that runs COVID-19 tests based on samples provided to us by providers. This means that we do not swab patients or in any way work directly with patients.

We are currently collaborating with medical providers that offer testing to underserved, at risk populations in the Santa Cruz Community. Complete and current information on testing on campus for students and staff can be found on the UCSC website .

Q: Do you also serve businesses or private clients?

Answer: Our focus is serving the campus and community health centers. We will continue to address the needs of the campus and local, underserved communities first.

Q: How long does it take for test results?

Answer: Test results are normally available between 24 to 48 hours, calculated based on business days. Once the results are ready, you will receive a notification via email on how to access them.


Effective May 1, 2020, the UCSC Molecular Diagnostic Lab is approved as a temporary testing site by the California Department of Public Health under CLIA certificate of accreditation – CDF-00002057, CLIA # 05D0687329.