Introduction to the IDA Animal Model

The animal model of iron deficiency anemia (IDA) is an essential experimental tool for investigating abnormalities in iron metabolism, elucidating the mechanisms underlying anemia, and evaluating the efficacy of iron‑supplementing therapies. This model is typically established by long-term feeding with a low‑iron diet, restricting dietary iron intake, or combining these approaches with repeated small‑volume blood sampling, thereby inducing progressive reductions in hemoglobin (Hb), red blood cells (RBCs), hematocrit (HCT), and serum iron levels—hallmark features of anemia—accompanied by decreased hepatic and splenic iron stores and alterations in iron‑metabolism–related parameters. The model effectively mimics the pathological characteristics of clinical iron deficiency anemia.

Service Advantages of Aniphe BioLab’s IDA Animal Model Platform

Relying on its well-established research platform for anemia, Aniphe BioLab offers clients robust and reliable IDA model development and pharmacological efficacy evaluation services, supporting the R&D of iron‑supplementing drugs and iron‑metabolism‑related products.

	The modeling protocol is well-established. It supports multiple classic modeling approaches, including iron-deficient feed induction and a combination of an iron‑deficient diet with blood loss, thereby meeting diverse research needs.
	The model is stable and reliable. It can stably induce a typical iron-deficiency anemia phenotype, characterized by decreased hemoglobin, red blood cell count, and serum iron levels.
	The evaluation system has been improved. It encompasses the assessment of key parameters, including complete blood count, serum iron, ferritin, transferrin saturation, and tissue iron content.
	Flexible scheme design The modeling cycle, dosing regimen, and endpoint evaluation metrics can be tailored to the drug’s characteristics and the study objectives.
	Data quality is guaranteed. Standardized end-to-end procedures and a quality assurance management system ensure that experimental data are authentic, reliable, and traceable.
	One-stop research services We provide end-to-end technical support, including model development, drug evaluation, sample analysis, data analysis, and report generation.

Modeling cycle	6 weeks
Laboratory animals	SD male rats
Positive drug	Oral iron supplementation: ferrous sulfate, ferrous fumarate, ferrous protein succinate, etc.; Intravenous iron therapy: ferric sucrose, ferumoxytol, and ferric carboxymaltose; Traditional Chinese medicines/adjunctive medications: Compound Hongyi Blood‑Tonifying Oral Liquid, Danggui Blood‑Tonifying Decoction, etc.; Novel supplements: ferritin nanoparticles, lactoferrin‑fortified formulations, and others.
Application areas	Pathogenesis of iron-deficiency anemia; bioavailability and pharmacodynamic evaluation of novel oral and intravenous iron formulations; the reciprocal interactions between gut microbiota and iron nutrition; intervention studies on functional iron deficiency in anemia of chronic disease and anemia of inflammation; preclinical translational assessments of iron deficiency and iron supplementation strategies in special populations, such as pregnant women and children.

Construction of the IDA animal model

After a one-week acclimatization period, male SD rats at the onset of weaning were provided with free access to deionized water and fed an iron-deficient diet. During the modeling phase, body weight was measured weekly, and coat color, toe pad pigmentation, and overall activity (mental state) were monitored. After 30 days, orbital venous blood was collected to determine hemoglobin concentration (Hb). Modeling was considered successful when the rats’ hemoglobin levels fell below 100 g/L. Following successful modeling, the animals were grouped according to their hemoglobin concentrations, ranked from lowest to highest.