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GlossaryRadioimmunoassay

sensitive technique measuring substances using radioactive labels and antibodies

Radioimmunoassay (RIA) is a sensitive laboratory technique used to measure the concentration of specific substances, such as hormones or drugs, in a sample. It involves creating a reaction between a radioactively labeled substance and an antibody, allowing for precise quantification based on the radioactivity detected. This method is highly accurate and widely used in medical diagnostics and research.

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Testosterone-Like Immunoreactivity in Hair Measured in Minute Sample Amounts: A Competitive Radioimmunoassay with an Adequate Limit of Detection

research Testosterone-Like Immunoreactivity in Hair Measured in Minute Sample Amounts: A Competitive Radioimmunoassay with an Adequate Limit of Detection

12 citations , December 2017 in “Scientific reports”

The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.

research Parathyroid Hormone-Related Protein in Normal and Neoplastic Canine Tissues: Immunohistochemical Localization and Biochemical Extraction

54 citations , May 1994 in “Veterinary Pathology”

PTHrP is higher in certain dog tumors and may act as a local growth factor.

research Asymptomatic Hyperprolactinemia Resulting from Macroprolactinemia

14 citations , January 1990 in “Fertility and Sterility”

Some patients with high prolactin levels don't show symptoms because they have a form of the hormone that's less active.

research Study of Fecal Glucocorticoid Metabolite in Bears: A Review

February 2023 in “Malaysian Journal of Science. Series B, Physical & Earth Sciences”

Analyzing bear poop helps measure their stress without harming them.

research Segmental Hair Analysis - A Retrospective Testosterone Diary?

July 2022 in “Research Square (Research Square)”

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

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community DHT reduction in the scalp for all doses of dutasteride is now available.

in Finasteride/Dutasteride 357 upvotes 10 months ago

Higher doses of dutasteride reduce scalp DHT more effectively than finasteride, but have diminishing returns after 3mg daily and may cause more side effects. Combining dutasteride with topical minoxidil can enhance results, but using both finasteride and dutasteride together is unnecessary.