About Pulse Path Lab Core
We run fewer tests, run them correctly, and report them honestly.
Pulse Path Lab Core was established in 2017 by Dr. Miriam Calloway, a clinical biochemist who had spent the previous decade working in hospital laboratory medicine, most recently as deputy head of pathology at a regional teaching hospital. The decision to open an independent facility came after a period of watching turnaround times stretch and quality controls loosen under institutional budget pressure. The founding principle was straightforward: run fewer tests, run them correctly, and report them honestly. The first laboratory occupied a single-floor unit with two analysers, a biosafety cabinet, and a staff of four.
The turning point came in the autumn of 2019, when Pulse Path Lab Core entered a formal research partnership with a university pharmacology department to support a Phase II clinical trial. That project required the development of a custom liquid chromatography-mass spectrometry method for plasma drug concentration monitoring, and it pushed the team to invest in instrumentation and documentation practices that went well beyond routine diagnostics. The trial ran for eighteen months. The experience of working to ICH E6 Good Clinical Practice standards changed how the laboratory approached every subsequent project, including its most routine haematology requests.
Today the laboratory operates across two floors, with a dedicated molecular suite, a histopathology processing room, and a separate reception area for patient-facing collections. The team includes six full-time scientists, two part-time consultant pathologists, and a laboratory manager who joined from a national blood service in 2021. Dr. Miriam Calloway still reviews every non-routine result personally before sign-off. The laboratory is accredited and participates in external quality assurance schemes across all major disciplines. New test menu additions are introduced only after a formal validation period, typically three to four months.
Dr. Miriam Calloway trained in clinical biochemistry at the University of Edinburgh, completing her doctoral research on lipoprotein subfractionation methods in 2006. She spent the following decade in hospital laboratory medicine, holding senior scientist and then deputy head of pathology roles at a regional teaching hospital, where she oversaw the introduction of high-sensitivity troponin assays and managed the laboratory's first ISO 15189 accreditation cycle. In 2017 she founded Pulse Path Lab Core with the specific intention of building a facility where quality controls were non-negotiable rather than aspirational. Outside the laboratory she keeps a small herb garden and reads widely in the history of medicine.