Reexamination of the correlation between caffeine concentrations in blood and saliva

Reexamination of the correlation between caffeine concentrations in blood and saliva - Reexamination of the correlation between caffeine concentrations in blood and saliva

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000059186

Enrollment

Registered

2025-10-01

Start date

2025-10-01

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Healthy adult men and women

Interventions

A beverage containing 150 mg of caffeine in 200 mL of water

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy males and females aged 20 to 60 years

Exclusion criteria

Exclusion criteria: None

Design outcomes

Primary

Measure	Time frame
Verification of the correlation between caffeine concentrations in blood and saliva	—

Secondary

Measure	Time frame
Individual differences in peak concentration time among caffeine drinking groups	—

Countries

Japan

Contacts

Public ContactYumi Hosoki

Glico Nutrition Co., Ltd. R&D Center

yumi.hosogi@glico.com050-1744-4293

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026