Improvement of a method to examine protein requirement

Improvement of Indicator Amino Acid method to examine protein requirement - Improvement of IAAO method

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000050212

Enrollment

Registered

2023-03-01

Start date

2021-12-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Healthy adults

Interventions

Dose of test drink including crystalline amino acid mixture, protein-free cookies, oil blocks, [1-13C]phynylalanine, and NaH13CO3

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: healthy, not taking drugs and supplements regularly, non-smoker

Exclusion criteria

Exclusion criteria: having internal diseases, smoker

Design outcomes

Primary

Measure	Time frame
13CO2 concentration in breath	—

Secondary

Measure	Time frame
urinary phenylalanine concentration	—

Countries

Japan

Contacts

Public ContactKazuko Ishikawa-Takata

Toyo University Faculty of Health and Sports Sciences

takata001@toyo.jp81-3-5924-2835

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 13, 2026