Walk-ins are welcome 

We offer COVID-19 PCR testing to accommodate your needs
Same day – $180 and
Next day – $150 testing results available.


​4221 Walney Rd.
Suite 401A
Chantilly, VA 20151

Welcome to ​Fairfax Medical Lab

We are committed to the quality, access, continuity and cost-effectiveness of patient care.


Everyday: 8 am -8 pm


Our lab provides an extensive laboratory directory designed to aid   clinicians when determining critical medical decisions. Fairfax Medical Lab uses the most up-to-date biotechnologies to ensure we offer the Highest-Quality Medical Lab Services available.

Patient and Client Support

Our focus is not only on accurate laboratory testing, but also strong client engagement. We offer a smooth experience from ordering tests, delivering specimen, to receiving your results. We encourage any client/patient questions and emphasize responsiveness with professional expertise.


Fairfax Medical Lab is accredited by the College of American Pathologists (CAP), the American Association and certified by the Clinical Laboratory Improvement Amendments of 1988 (CLIA).

Diverse and Extensive Test Directory

Our site provides an easy to use laboratory guide created to catalogue all diagnostic tests offered by Clinician/Specialty type for your convenience. 

We Take Walk-Ins!

Our Promise 

Fairfax Medical Lab is locally based in Northern Virginia, and was built on three principles: Client Satisfaction, Reliable Results, and Cost Efficiency. We believe these values will continue to be the key to our success. For client satisfaction to remain high we emphasize turnaround time and customer service responsiveness. As a result, we strategically manage our volume and record sample delivery times to ensure fast turnaround times. Fairfax Medical Lab is building a brand of reliable results and cost efficiency by working with our clients to suit their needs. In our monumental effort to blend these principles into our rapidly growing business we strive to make long-lasting professional relationships with our laboratory and clinician partners. 

Walk in Appointments Available Daily

Need a last minute testing? We provide same day testing for travelers and other urgent testing needs.

Contact us

Call Us


Email Us

Our Location

​4221 Walney Rd.
Suite 401A
Chantilly, VA 20151

Get in touch

8 + 8 =