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Could a simple calculation replace a complex testosterone lab test?

NCT ID NCT04807231

Knowledge-focused Sponsor: Centre Hospitalier Universitaire, Amiens Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compared two methods for measuring bioavailable testosterone in the blood: the standard lab test (radioimmunoassay) and a mathematical calculation. Researchers included 270 men and women aged 18 to 90. The goal was to see if the calculation matches the lab test closely enough to replace it, potentially simplifying future testing.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If the calculation method proves accurate, it could replace the more complex lab test, making testosterone measurement easier and cheaper.
What could go wrong
This is a completed observational study comparing two measurement methods. It does not test a treatment, so it won't directly change patient care.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

270 people

The number who actually took part.

Started

Feb 2021

Finished

Feb 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The population of this study is a unique cohort of 270 patients, male and female, aged between 18 and 90 (included). These patients have been included if there were being prescribed bioavailable testosterone by their physician in routine.

Ages

18 to 90 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Every men and women aged between 18 and 90 can be included Exclusion Criteria: * insufficient sample * sample not send for RIA

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Conditions

The condition(s) this trial relates to.

multiple endocrine neoplasia type 1

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Androgens Testosterone

Contacts and locations

Locations

  • CHU Amiens

    Amiens, 80480, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.