IMIM (Hospital del Mar Medical Research Institute)
Barcelona, 08003, Spain
NCT Number: NCT04207684
Background:
Testosterone is a steroid widely known to improve physical performance due to its protein-anabolic effect. Like other androgenic anabolic steroids (EAA), testosterone is included on the World Anti-Doping Agency (WADA) list of prohibited substances.
EAA are the most detected banned substances in anti-doping controls. Therefore, different analytical strategies are required to improve its detection.
Hypothesis:
The intramuscular administration of 250 mg of testosterone (cypionate) in healthy subjects allows generating detectable concentrations of the drug in urine. Positive urine samples will enable to identify analytical strategies for doping control.
Objectives:
Primary objective: To measure the concentrations of testosterone in urine for anti-doping control samples.
Secondary objective: To identify metabolites and precursors of testosterone in urine. To assess safety and tolerability of the drug used.
Methods:
Phase I, open, non-randomized clinical trial, with a treatment condition (testosterone) administered via intramuscular injection to 4 subjects.
Looking for future studies?
Notify Me18 year–50 year
Male
Interventional
Phase 1
Barcelona, 08003, Spain
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
250 mg of testosterone cypionate (equivalent to 174,8 mg of testosterone) administered via intramuscular injection in a single dose (2 mL)
Other names: Testex Prolongatum® 250 mg/2 mL
Time frame: 0-12 hours post-administration (Day 1)
Concentration of testosterone in fraction-1 urine samples
Time frame: 12-24 hours post-administration (Day 1)
Concentration of testosterone in fraction-2 urine samples
Time frame: 24-48 hours post-administration (Day 2)
Concentration of testosterone in fraction-3 urine samples
Time frame: 48-72 hours post-administration (Day 3)
Concentration of testosterone in fraction-4 urine samples
Time frame: 72-96 hours post-administration (Day 4)
Concentration of testosterone in fraction-5 urine samples
Time frame: 96-120 hours post-administration (Day 5)
Concentration of testosterone in fraction-6 urine samples
Time frame: 0-12 hours post-administration (Day 1)
Concentration of testosterone metabolites in fraction-1 urine samples
Time frame: 12-24 hours post-administration (Day 1)
Concentration of testosterone metabolites in fraction-2 urine samples
Time frame: 24-48 hours post-administration (Day 2)
Concentration of testosterone metabolites in fraction-3 urine samples
Time frame: 48-72 hours post-administration (Day 3)
Concentration of testosterone metabolites in fraction-4 urine samples
Time frame: 72-96 hours post-administration (Day 4)
Concentration of testosterone metabolites in fraction-5 urine samples
Time frame: 96-120 hours post-administration (Day 5)
Concentration of testosterone metabolites in fraction-6 urine samples
Parc de Salut Mar
Other
Acronym: TST
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
Published trials that share one or more normalized conditions with this study.
NCT05447078
Healthy Volunteers, Infections
Jackson, Mississippi, United States
View Trial DetailsNCT07513532
Healthy Volunteers
Seattle, Washington, United States
View Trial DetailsNCT07090655
Healthy Volunteers
Brisbane, Australia
View Trial DetailsNCT01915212
Communicable Diseases, DNA Virus Infections
Bethesda, Maryland, United States
View Trial Details