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Not yet recruitingNCT06957717Updated May 4, 2025

Effect of Cow's Milk Kefir on Short Chain Fatty Acid (SCFA), Haemoglobin, and Ferritin Levels of Anemic Adolescent Girls

An interventional study of cow's milk kefir and pasteurized cow's milk in Iron Deficiency Anemia, sponsored by Lusyana Gloria Doloksaribu. Not yet recruiting at 1 site in Indonesia. Open to female participants aged 15 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-05-04.

Sponsored by Lusyana Gloria Doloksaribu · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
15 Years to 18 Years
Sex
Female
01

Study summary

Introduction: The prevalence of anemia among adolescent girls in Indonesia is still quite high. According to the Indonesian Health Survey (IHS) in 2023, it was 18% and is still a national problem. Long-term supplementation of blood supplement tablets (TTD) as an effort made by the government to prevent/overcome anemia has caused side effects, namely dysbiosis by pathogenic bacteria. Giving cow's milk kefir containing various probiotics can overcome the side effects of supplementation, and its metabolites accelerate iron absorption so that iron status in the blood increases and ultimately restores anemia in adolescent girls. Method: It's research is an experimental study, with a Randomized Controlled Trial (RCT) design, pre-posttest design, involving research subjects of adolescent girls (15-18 years) with mild and moderate anemia, at SMKN 1, 2, and 3 Kasihan, Bantul Regency, Yogyakarta as many as 80 students. Subjects were divided into 2 groups, namely group 1 (treatment group), which was given 120 ml of cow's milk kefir every day and TTD 1 grain/week, and group 2 (control group), which was given 120 ml of cow's milk every day and TTD 1 grain/week. The duration of administration was 2 months. The study outcomes were Short Chain Fatty Acid (SCFA) levels in feces by Gas Chromatography-Mass Spectrometry (GC-MS) method, hemoglobin by Hematology Analyser method, and serum ferritin by Ferritin ELISA measured at the beginning and end of the study. Statistical analysis included univariate, bivariate, and multivariate analysis. Clinical analysis was also conducted to estimate the effect size of the treatment

Read the detailed description

This protocol represents the only doctoral research dissertation proposal I will undertake as part of my dissertation, which does not exist.

02

Conditions studied

  • Iron Deficiency Anemia

Keywords

  • Kefir
  • Short Chain Fatty Acid
  • Hemoglobin
  • Ferritin
  • Iron Deficiency Anemia
03

In context

Anemia, Iron-Deficiency

660 studies on the registry are indexed under Anemia, Iron-Deficiency; 106 are open to participants now.

This study's planned enrollment of 80 is below the median of 100 across 515 interventional studies indexed under Anemia, Iron-Deficiency.

Browse Anemia, Iron-Deficiency studies →

Lead sponsor

This is the only study on the registry with Lusyana Gloria Doloksaribu as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
15 Years to 18 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Adolescent girls aged 15-18 years
  • Have a mild and moderate degree of anemia (Hb 8-11.9 g/dl)
  • Have a normal menstrual cycle and duration

Exclusion criteria

Exclusion Criteria:

  • Suffering from thalassemia, hemosiderosis, blood cancer, and malaria, based on the doctor's diagnosis in the last 3 months
  • Taking supplements other than TTD
  • Taking antibiotics in the last 3 months
  • Suffering from lactose intolerance through interviews
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Outcomes assessor)
Enrollment
80 participants (estimated)

Study arms

  • Active comparator
    intervention group

    Fresh cow's milk drink pasteurized at 72 °C, and fermented by kefir grain (5%) for 24 hours at 25 °C, then filtered to produce cow's milk kefir, and stored at 4 °C for 24 hours before drinking, given as 1 bottle/day of 120 ml + 10% liquid sugar for 2 months.

    Combination Product: cow's milk kefir

  • Placebo comparator
    control group

    Fresh cow's milk drink pasteurized at 72 °C, without fermentation, given 1 bottle/day of 132 ml for 2 months

    Combination Product: pasteurized cow's milk

Interventions

  • Combination productcow's milk kefir

    group given cow's milk kefir and blood supplement tablets (TTD)

    Also known as: intervention group

  • Combination productpasteurized cow's milk

    group given pasteurized cow's milk and blood supplement tablets (TTD)

    Also known as: control group

06

What researchers measure

Primary outcomes

  1. Short Chain Fatty Acid

    SCFA (acetate, propionate, and butyrate) levels in fresh feces of adolescent girls, using the GC-MS (Gas Chromatography-Mass Spectrometry) Method, were measured before (0 months) and after the intervention (2 months), using a ratio scale. The examination procedure included collecting feces in the field according to the procedure at https://drive.google.com/drive/folders/1uXklwFuC-1rnQ1Anim86b7-9pqLSheIz. Fresh feces samples were collected immediately, by storing them in a cool box (to maintain the quality of feces so that it remains stable during storage and transportation, and avoid the maturation process that can affect the results of lab tests, so that the results of the lab analysis carried out can be accurate and valid), and then immediately taken to the laboratory to quantify each of the short chain fatty acids (SCFA) in the sample.

    Time frame: 2 months after intervention

  2. hemoglobin

    Adolescent girls' hemoglobin values in the blood taken from the median cubital vein, using the hematology analyzer method (unit g/dl), were measured before (0 months) and after the intervention (2 months), using a ratio scale.

    Time frame: 2 months after intervention

  3. Ferritin

    Ferritin content in the blood of adolescent girls taken from the median cubital vein, using the Ferritin ELISA method (unit µg/L), was measured before (0 months) and after the intervention (2 months), using a ratio scale

    Time frame: 2 months after intervention

Secondary outcomes

  1. Nutrient intake

    The amount of nutrients iron, folic acid, protein, vitamin C, zinc, energy and fat that enter the body of adolescent girls per day obtained from food and beverages, using the Food Record method carried out for 3 days, consisting of 2 times weekday and 1 time weekend, analyzed using the Nutrisurvey 2007 application, measured before (0 months) and after the intervention (2 months), using a ratio scale.

    Time frame: 2 months after intervention

  2. Nutritional status of adolescent girls (body mass index / age)

    The Z-score or standard deviation (SD) value of adolescent girls after calculating the ratio of body weight in kilograms (kg) squared with height in meters (m) correlated with age, was analyzed using the WHO AnthroPlus application, measured before (0 months) and after the intervention (2 months), using a ratio scale. Weight values were obtained by weighing adolescent girls using digital scales with an accuracy of 0.1 kg. Height values were obtained by measuring the height of adolescent girls using a microtoise with an accuracy of 0.1 cm, and age was obtained by asking about the date/month/year of birth of adolescent girls. Using a questionnaire.

    Time frame: 2 months after intervention

  3. Menstrual cycle and duration of adolescent girls

    The physiological process experienced by adolescent girls, namely periodic bleeding from the uterus accompanied by the release of the endometrial wall every month, was obtained through a questionnaire, using an ordinal scale, with the categories (1). Normal if the menstrual cycle ranges from 21-35 days, and the length of menstruation is 3-7 days, and (2). Abnormal if the menstrual cycle ranges \<21 days and \>35 days, and the duration of menstruation is \<3 days and \>7 days

    Time frame: 2 months after intervention

  4. Diarrhea

    Complaints of watery or loose bowel movements that occur more than 3 times a day were obtained through a questionnaire, using an ordinal scale, with the categories (1). No diarrhea if the frequency of bowel movements ranged from 1-2 times/day, with a solid consistency, and (2). Diarrhea, the frequency of bowel movements ranging ≥3 times/day, watery, thin consistency

    Time frame: 2 months after intervention

07

Study locations

1 site
  • Gadjah Mada University
    Yogyakarta, Special Region of Yogyakarta 55281, Indonesia
    • Lusyana Gloria Doloksaribu, Doctoral student · Contact · lusyanagloriadoloksaribu@mail.ugm.ac.id · 085360637111
    • Susetyowati, Promotor · Contact · susetyowati@ugm.ac.id · 0818277781
    • Lusyana Gloria Doloksaribu, Doctoral student · Principal investigator
    • Bernadette Josephine Istiti Kandarina, Co-promotor · Sub investigator
    • Susetyowati Susetyowati, Promotor · Sub investigator
08

References and documents

Individual participant data

Plan to share: Yes — IPD data will be shared, but in the form of coding.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report, Analytic code

Time frame: IPD can be obtained after the dissertation is registered at the Universitas Gadjah Mada Library or the Faculty of Medicine, Public Health, and Nursing Library

Access criteria: Only investigator

Data sharing details ↗ · lib.ugm.ac.id

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for May 2025; primary completion for Dec 2025, 7 months later.

Of 127 non-industry interventional studies with no phase under Anemia, Iron-Deficiency, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 27. This study's planned 7 months is below that.

Counting every sponsor, half of 139 studies reached it within 11 months; a quarter within 4 and three quarters within 27.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 25, 2025
First posted
May 4, 2025
StartEst.
May 2025
Primary completionEst.
Dec 2025
CompletionEst.
May 2026
Last update
May 4, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 4, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06957717
Lead sponsor
Lusyana Gloria Doloksaribu
Responsible party
Lusyana Gloria Doloksaribu (doctoral students of the faculty of medicine, public health and nursing, Gadjah Mada University, Gadjah Mada University) — Sponsor-investigator
First posted
May 4, 2025
Start date
May 2025 (estimated)
Primary completion
Dec 2025 (estimated)
Completion
May 2026 (estimated)
Last update
May 4, 2025

Study contacts

Lusyana Gloria Doloksaribu
Contact
lusyanagloriadoloksaribu@mail.ugm.ac.id
085360637111

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in May 2025. You cannot join it, but the record below documents what was studied.

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