
MarinBio has an active license for seven commonly used radioisotopes for contract research and development applications in the pharmaceutical, biotechnology, diagnostic and medical industries, including the following specific examples of radioisotope uses:
These 7 radioisotopes are often used by MarinBio professionals in enzyme, drug uptake, intracellular distribution, binding, quantitation & metabolism assays. Some projects need radioactivity because our clients have already submitted protocols to the FDA and do not want to change methods.
Some projects require the sensitivity that only isotopes can deliver.


MarinBio owns, expertly maintains and routinely operates the instrumentation required for various isotope detection and maintains disposal licenses. MarinBio professionals are available to discuss the pros and cons of using particular assays employing radioactive isotopes.
MarinBio professionals are highly trained and employ safe handling and disposal of seven different key radioisotopes.
Currently, 3H is used in a validated GMP assay for a commercial product.
Contact us to discuss the specifics of your project. Our team of experienced scientists is ready to assist you with tailored solutions to meet your unique needs. Whether you need help with assay development, FDA IND, stability study, lot release approval, or other scientific endeavors, we are here to support you.
Contact us to learn more about our cell based assay services
We will initiate your project as soon as the proposal is approved and signed by you. Our streamlined process ensures a quick start, minimizing delays and maximizing efficiency. Fill out the form below to email us or click our live chat option to speak with a MarinBio Scientist and get your project underway.
Yes, we have over 30 years of expertise in developing and validating cell based assays for FDA IND, lot release or stability study approval. Our team can also liaise directly with the FDA on your behalf, ensuring a smooth and compliant process. Please contact us to learn more about how we can assist you with your assay development and FDA approval needs.
MarinBio scientists are experienced and creative in designing, developing, validating assays. Some of the assays we perform are listed below, but there are many more that we created, developed and validated. Give us call so that we may help you.

Give us a call at 415-883-8000
With over 30 years of expertise in developing radioimmunoassays (RIAs), we guarantee precision and reliability. Our highly skilled scientists with extensive experience in radioimmunoassay techniques are dedicated to providing accurate results with fast turnaround times, supporting your drug discovery endeavors with top-notch quality. Our services include:
MarinBio assists you throughout the drug development process, including IND/BLA applications, commercialization, and (PK). We engage directly with the FDA and work closely with our clients to achieve their goals.
Radioimmunoassay (RIA) is a highly sensitive and specific immunoassay technique used to measure very low concentrations of antigens, such as hormones, vitamins, drugs, or other substances in biological samples. RIA also has very important applications for protein characterization and protein quantitation assays, drug binding assays, DNA and RNA assays, receptor binding assays, cell-based or other bioassays and has important uses in the commercial development of drugs and monitoring drug metabolism.
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For More Information about our Radioimmunoassay services, please use the following informational form