Nutritional study to determine the efficacy of dry blood spots, urine and faeces metabolite profiles for dietary assessment

Pilot study on the impact of nutritional and lifestyle habits on the profile of fatty acids in dried blood Spots (DBS) and metabolites in urine and faeces

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN47135203

Enrollment

Registered

2024-10-22

Start date

2023-10-30

Completion date

Unknown

Last updated

2025-09-08

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

Conditions

Efficacy of dry blood spots, urine and faeces metabolite profiles for dietary assessment Other

Interventions

The participants of this study were recruited from AZTI staff in Derio (Bizkaia) from October to November 2023. In total, 24 healthy volunteers aged 18-65 years were involved in the study, with 18 com

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy male and female aged 18-65 years old.

Exclusion criteria

Exclusion criteria: 1. Diagnosed disease. 2. Taking medication. 3. Consuming or having consumed omega-3 supplements in the last 6 months. 4. Cancer in the last 6 months. 5. Pregnant or breastfeeding women. 6. Have undergone a nutritional intervention diet in the last 6 months.

Design outcomes

Primary

Measure	Time frame
1. General information about lifestyle, physical activity, dietary habits, and digestive health is measured using a brief online questionnaire at baseline 2. Daily food intake is measured using daily food records during the two-week usual diet period and the three-week nutritional intervention period 3. Capillary blood samples measured at baseline (T0), after one week of fish restriction (T1), one day after T1 (T2), after the first week of intervention (T3), one day after T3 (T4), and after the second week of intervention (T5) 4. Urine samples measured at baseline (T0), after one week of fish restriction (T1), one day after T1 (T2), after the first week of intervention (T3), one day after T3 (T4), and after the second week of intervention (T5) 5. Faeces samples measured at baseline (T0), after one week of fish restriction (T1), and after the second week of intervention (T5)	—

Measure

Time frame

1. General information about lifestyle, physical activity, dietary habits, and digestive health is measured using a brief online questionnaire at baseline 2. Daily food intake is measured using daily food records during the two-week usual diet period and the three-week nutritional intervention period 3. Capillary blood samples measured at baseline (T0), after one week of fish restriction (T1), one day after T1 (T2), after the first week of intervention (T3), one day after T3 (T4), and after the second week of intervention (T5) 4. Urine samples measured at baseline (T0), after one week of fish restriction (T1), one day after T1 (T2), after the first week of intervention (T3), one day after T3 (T4), and after the second week of intervention (T5) 5. Faeces samples measured at baseline (T0), after one week of fish restriction (T1), and after the second week of intervention (T5)

—

Secondary

Measure	Time frame
There are no secondary outcome measures	—

Countries

Spain

Contacts

Public ContactSara Arranz

sarranz@azti.es+34 671750399

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026