# BWXT Medical

Source: https://nuclide.cc/companies/bwxt-medical/  
Nuclide record `bwxt-medical` (Company). Data CC BY-NC 4.0, attribute "Data from Nuclide (nuclide.cc)"; commercial use needs a licence.

## TL;DR

A Canadian company, owned by the US nuclear firm BWXT, that is building a made-in-Canada supply of the technetium generators hospitals use for the vast majority of nuclear medicine scans, plus other isotopes and radiotherapy hardware.

## Summary

BWXT Medical Ltd. is the nuclear medicine subsidiary of BWX Technologies, Inc. (NYSE: BWXT), operating manufacturing and processing facilities in Ottawa and Vancouver, Canada. Its central programme is a proprietary route to molybdenum-99 (Mo-99), the parent isotope of technetium-99m (Tc-99m), the radionuclide used in roughly 80% of nuclear medicine procedures worldwide. Rather than irradiating enriched-uranium targets in a research reactor, BWXT's approach irradiates natural molybdenum targets in an operating commercial power reactor: since 2018/2019 it has worked with Ontario Power Generation and its subsidiary Laurentis Energy Partners to install a Target Delivery System (TDS) at OPG's Darlington Nuclear Generating Station, making Darlington the first commercial power reactor in the world to produce Mo-99. The Mo-99 is processed at BWXT Medical's Ottawa facility into proprietary Tc-99m generators intended as drop-in replacements for existing hospital and radiopharmacy generators, pending FDA and Health Canada approval; a February 2023 milestone confirmed installation and initial commissioning of the isotope system at Darlington.

BWXT Medical's isotope portfolio extends beyond Mo-99/Tc-99m: industry directory material describes it as also handling actinium-225, indium-111, iodine-123, strontium-82 and germanium-68, and as pursuing cobalt-60 production at Darlington (alongside existing extraction at OPG's Pickering station). The company is also the exclusive contract manufacturer, outside China, of TheraSphere (yttrium-90 glass microspheres for radioembolisation) in partnership with Boston Scientific, and has worked with Laurentis on scalable production infrastructure at Darlington intended to support lutetium-177 as well as Mo-99.

As a large, reactor-adjacent contract manufacturer, BWXT Medical sits in the therapeutic and diagnostic isotope supply chain alongside other Mo-99/Tc-99m producers (Curium, NTP Radioisotopes, ANSTO) and complements Boston Scientific's radioembolisation device business through its TheraSphere manufacturing role.

## Fields

- Kind: Company
- Status: active
- Last checked: 2026-09-22
- Also known as: BWXT Medical Ltd.
- Tags: molybdenum-99; technetium-99m; generator; radioembolisation
- HQ: Ottawa, Ontario, Canada
- Type: radiopharma
- Website: https://www.bwxtmedical.com

## Sources

- BWXT Medical: BWXT Medical and Laurentis complete key Tc-99m generator program milestone (2023): https://www.bwxtmedical.com/bwxt-medical-and-laurentis-complete-key-tc-99m-generator-program-milestone/
- BWXT Medical: Tc-99m generators product sheet (PDF): https://bwxtmedical.com/wp-content/uploads/2024/05/tc-99m-product-sheet.pdf
- BWXT Medical: BWXT Names Nuclear Medicine Business as BWXT Medical (2021): https://www.bwxtmedical.com/bwxt-names-nuclear-medicine-business-as-bwxt-medical/
- BWXT/OPG: OPG and BWXT make significant progress in production of Mo-99 at Darlington (2020): https://www.bwxt.com/opg-and-bwxt-make-significant-progress-in-production-of-life-saving-medical-isotope-at-darlington-nuclear-generating-station-2/
- CNIC: Canadian Isotope Ecosystem Directory 2025 (BWXT Medical entry, PDF): https://s45591.pcdn.co/wp-content/uploads/2025/12/2025-CNIC-Medical-Isotope-Ecosystem-Directory-DEC2025-AX.pdf

## Connected records

- technologies: [Radioembolisation (TARE / SIRT, yttrium-90)](https://nuclide.cc/technologies/radioembolisation-tare/), [Research reactors for medical isotopes (Mo-99, Lu-177, I-131)](https://nuclide.cc/technologies/research-reactor-isotope-production/), [Therapeutic isotope supply chain (Mo-99, Lu-177, Ac-225)](https://nuclide.cc/technologies/therapy-isotope-supply-chain/)
- companies: [Boston Scientific](https://nuclide.cc/companies/boston-scientific/)
- isotopes: [Actinium-225](https://nuclide.cc/isotopes/ac-225/), [Germanium-68](https://nuclide.cc/isotopes/ge-68/), [Indium-111](https://nuclide.cc/isotopes/in-111/), [Iodine-123](https://nuclide.cc/isotopes/i-123/), [Lutetium-177](https://nuclide.cc/isotopes/lu-177/), [Molybdenum-99](https://nuclide.cc/isotopes/mo-99/), [Technetium-99m](https://nuclide.cc/isotopes/tc-99m/), [Yttrium-90](https://nuclide.cc/isotopes/y-90/)

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