Medical Laboratory Science Journal
Vol. 2 No. 1 (2026): May 2026

Pre–post effect of iron and vitamin C supplementation on hemoglobin in adolescent girls

Ni Nyoman Sariani (STIKES Wira Medika Bali, Indonesia)
Ni Luh Gede Puspita Yanti (STIKES Wira Medika Bali, Indonesia)
Anak Agung Ayu Eka Cahyani (STIKES Wira Medika Bali, Indonesia)



Article Info

Publish Date
28 May 2026

Abstract

Anemia remains a major nutritional problem among adolescent girls and may have long-term consequences if not properly addressed. This study was conducted to assess the effect of combined iron and vitamin C supplementation on hemoglobin levels among adolescent girls. A pre-experimental study with a one-group pretest–posttest design was conducted involving 30 anemic female students at a junior high school in Kintamani, Indonesia. Participants received iron tablets together with vitamin C supplementation, and hemoglobin levels were measured before and after the intervention. Data were analyzed using the Wilcoxon signed-rank test. A significant increase in hemoglobin levels was observed after the intervention. These results indicate that the combination of iron and vitamin C contributes to improved hemoglobin status. The integration of vitamin C into anemia prevention programs, particularly in school-based settings, may enhance the effectiveness of existing interventions. In addition, the use of point-of-care testing is important to support accurate monitoring of hemoglobin levels in resource-limited environments.

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Journal Info

Abbrev

MedLab

Publisher

Subject

Description

Medical Laboratory Science Journal (MedLab) is a peer-reviewed journal that publishes high-quality scholarly articles focusing on advances in the science, education, and application of medical laboratory technology. The journal welcomes original research articles, systematic reviews, literature ...