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AgX100® Iodine-125
Brachytherapy Seed
Target and treat cancer with a clinically proven I-125 brachytherapy seed.
When you need a safe, effective LDR brachytherapy treatment backed by decades of clinical experience, Iodine-125 brachytherapy seeds deliver. Designed after the industry benchmark Iodine-125 seed, AgX100® facilitates delivery of radiation directly to the tumor site while minimizing exposure to healthy tissue.
* Seed not to scale – AgX100® is 4.5mm long x 0.8mm high
AgX100® is intended to treat prostate cancer, intra-ocular malignancies, and other tumor types with known radiosensitivity. Based on the industry standard - Iodine-125.
Time-tested clinical experience
- Substantially equivalent in physical and dosimetric characteristics to the I-125 industry benchmark1
- Recognized as the most widely published and clinically proven I-125 seed for the treatment of localized prostate cancer1
- Available in a wide range of activities
- 59.43-day half-life
- 27-35 keV principle energy
Trusted quality
- Pd-103 produced on our own cyclotrons and seeds manufactured in Buford, GA
- Dosimetric characterization of TheraSeed® Pd-103 include Monte Carlo and experimental studies conducted in accordance with the AAPM Task Group 43 update (TG43U2)2
AgX100® can be supplied in a range of brachytherapy devices and delivery methods
We understand that every clinical team has unique needs and workflows. That’s why we offer a comprehensive range of LDR brachytherapy solutions designed to provide flexibility, procedural efficiency, and value.
From loose seeds and preloaded needles to cartridges and braided sutures, we offer a comprehensive range of LDR brachytherapy solutions designed to support your procedural needs, clinical workflow, and patient care.
We offer a comprehensive portfolio of strands, preloaded needles, carriers, and fiducial markers, backed by personalized customer service. We remain committed to investing in innovative solutions that support targeted, minimally invasive treatment and evolving clinical needs.

Preloaded Brachytherapy Needle Trays
Configurations & Carriers

ANCHORSEED Bio-absorbable polymer seed
Configurations & Carriers

C20 Brachytherapy
Seed Cartridges
Configurations & Carriers

Brachytherapy Stranded Seeds
Configurations & Carriers

Seed Carrier
(Eye Plaque)
Configurations & Carriers

Gold Fiducial
Markers
Fiducial Markers

AnchorMarker
Fiducial Markers
AgX100® - Iodine-125
Interested in learning more?
Agx100® I-125 is indicated for the treatment of localized and unresectable tumors with low to moderate radiosensitivity. Tumors may be recurrent or residual following external beam radiation or excision of primary tumor.
- Data on file
- Wei S, Li C, Li M, et al. Radioactive Iodine-125 in Tumor Therapy: Advances and Future Directions. Front Oncol. 2021;11:717180. Published 2021 Sep 30. doi:10.3389/fonc.2021.717180
AgX100® I-125 source and accessories should be used by physicians who are qualified by training and experience in the safe use and handling of radionuclide brachytherapy sources and whose experience and training has been approved by the appropriate government authorities authorized to license the use of radioactive materials.
Information intended for the USA. Indications may vary in different countries; please either consult the appropriate IFU or your local distributor.
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