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.

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.

HOLIDAY CLOSURES: Thurs. Nov. 11 | Veteran's Day & Thurs. Nov. 25-26 | Thanksgiving

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: 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: 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 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.

Q: If my test is positive, will my sample be sequenced?


In the event that you test positive for COVID-19, biospecimens (meaning the sample that you provide) collected from you and/or information obtained from your biospecimen may be used by the University of California for virus genome sequencing. If used, your personal information will be removed. The result of virus genome sequencing will be the variant of COVID-19 that was present in your biospecimen; it is not a sequence of your human genome and does not contain any genomic information about you. This sequencing is part of an effort to identify emerging COVID-19 variants in the Santa Cruz community, and is consistent with the World Health Organization’s emergency committee's Statement, with recommendation to ramp up genome sequencing to help combat the emerging variants (January 15, 2021, You will not share in any commercial value or profit derived from the use of your biospecimen and/or information obtained from them.

Q: What happens to my data once results of testing and sequencing are known?


COVID-19 test results. All COVID-19 testing labs are required to report test results to the physician of record and to California Reportable Disease Information Exchange (CalREDIE), which is used by the California Department of Public Health (CDPH), local public health officials and healthcare providers for communicable disease reporting and surveillance.

Our lab reports results through an automated connection to CalREDIE and the Santa Cruz County Health Information Organization (SCHIO), which in turn is accessed by physicians of record. For results that test positive for COVID-19 we also directly contact the doctor who ordered the test. The County of Santa Cruz Public Health Office is informed of results through CalREDIE. This reporting includes the test result and personally identifiable information of the patient, and is reported using secure systems that prioritize data privacy.

Virus sequencing results. No human genome is sequenced; only the virus genome is sequenced. Virus sequencing results from positive samples are reported by our lab and sequencing team pursuant to California Code of Regulations Title 17 Section 2505(q). In addition, we report de-identified variant information to Santa Cruz County Public Health and campus leadership. We also provide Santa Cruz County Public Health authorized professionals with identifiable data (person’s name, contact information) via encrypted communication for contact tracing purposes.

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: 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.


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.