An observational study in Infection, sponsored by University of Liverpool. Recruiting at 1 site in United Kingdom. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-11.
Sponsored by University of Liverpool · Observational
This study aims to ensure that assays that measure drug concentrations are accurate and precise in different matrices when quantified using high performance liquid chromatography -tandem mass spectrometry (HPLC-MS/MS). The study involves collecting samples of various bodily fluids to quantify antimicrobials, antivirals, oral contraceptives and erectile dysfunction agents. Samples will also be obtained from individuals not receiving these medications for quality control purposes.
2,093 studies on the registry are indexed under Infections; 364 are open to participants now.
This study's planned enrollment of 100 is below the median of 300 across 685 observational studies indexed under Infections.
Browse Infections studies →University of Liverpool is the lead sponsor of 99 studies on the registry; 10 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Healthy volunteers receiving specific medication or healthy volunteers taking no medication.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
To measure drug concentrations using high performance liquid chromatography -tandem mass spectrometry (HPLC-MS/MS) (accuracy and precision of assays that measure drug concentrations)
Assay validation
Time frame: Follow up up to 5 years
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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University of Liverpool