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Studying how healthy skin reacts to a new LED light device

Determining reference ranges for a novel light emitting diode (LED) phototest device

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN17210709
Enrollment
50
Registered
2026-04-01
Start date
2026-03-17
Completion date
Unknown
Last updated
2026-05-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Erythema reaction of non-photosensitive individuals to various wavelengths of LED light Skin and Connective Tissue Diseases

Interventions

The study will consist of the following interventions and assessments: Visit 1 Screening/inclusion & exclusion/informed consent Visit 2 (Day 0) Up to 30 days from Visit 1 1. Non-invasive reflectan

Sponsors

University of Dundee
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 999 Years

Inclusion criteria

Inclusion criteria: 1. Healthy persons with no clinically significant abnormality identified by participant reported medical history, in particular no evidence of abnormal photosensitivity 2. Adult males and females, >18 years only 3. Capable of giving informed consent 4. Able to understand and comply with protocol requirements and timetables, instructions and protocol-stated restrictions

Exclusion criteria

Exclusion criteria: 1. Any photosensitising medication or supplement (systemic or topically applied to the test area) within 14 days prior to testing 2. Insufficient clear, untanned, unaffected skin on the back to allow minimal erythema dose (MED) testing 3. Participation in a clinical study involving administration of an investigational drug (new chemical entity/non-licensed drug) or in a clinical study involving administration of a marketed drug within the past 3 months 4. Known to have abnormal photosensitivity 5. Pregnant or breastfeeding 6. Use of self-tanning products on the back (test area) in the preceding 2 weeks 7. Sunbed exposure or natural sunlight-induced sunburn or tan on the back (test area) acquired within the four weeks prior to recruitment 8. Immunosuppression due to medications (such as organ transplant recipient) or disease (including HIV or haematological malignancy) 9. History of skin cancer, not including basal cell carcinoma (BCC) 10. History of malignancy not curatively treated at least 5 years before screening visit, with exception of BCC or cervical carcinoma in situ, which may have been curatively treated within 1 year 11. History of current use of illegal or ‘recreational’ drugs 12. Any condition which, in the opinion of the investigator, might put the subject at risk by participating in this study

Countries

Scotland, United Kingdom

Contacts

Public ContactSusan Yule
susan.yule@nhs.scot+44 (0)1382 496498

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: May 30, 2026