each subject is its own control med.

[cockney]

помогите пожалуйста перевести each subject is its own control

Subject - это человек или препарат?

Контекст:
For each product, this is an open, intra-individual study; each subject is its own control. The study was conducted in parallel groups.

[black_cat]

Скорее всего subject - участник исследования

[Валькирия]

+ доброволец