Related Experiment Video
Updated: Jun 13, 2026

Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion
Published on: May 10, 2018
Macroprolactinaemia in diabetic patients
Nese Ersoz Gulcelik1, Aydan Usman
1Department of Endocrinology and Metabolism, Faculty of Medicine, Hacettepe University, Ankara, Turkey. nersoz@hacettepe.edu.tr
Diabetic patients with hyperprolactinemia show a higher prevalence of macroprolactinemia. Identifying macroprolactin levels in these patients is crucial, as it may negate the need for further extensive diagnostic evaluations.
Area of Science:
- Endocrinology
- Metabolic Disorders
- Clinical Diagnostics
Background:
- Hyperprolactinemia is often associated with reduced prolactin levels in poorly controlled diabetes mellitus.
- However, some diabetic patients present with elevated prolactin levels, necessitating further investigation.
- The role of macroprolactinemia in diabetic patients with hyperprolactinemia requires clarification.
Purpose of the Study:
- To evaluate diabetic patients diagnosed with hyperprolactinemia.
- To determine the prevalence and significance of macroprolactinemia in this patient group.
- To assess the clinical implications of macroprolactinemia in diabetic patients with elevated prolactin.
Main Methods:
- Retrospective review of 174 patients with hyperprolactinemia over two years.
- Data collection included symptoms, diabetes mellitus status, prolactin and macroprolactin levels, and pituitary MRI.
- HbA1c, fasting, and postprandial glucose levels were analyzed in diabetic patients.
Main Results:
- Diabetes mellitus was diagnosed in 15.5% (27/174) of hyperprolactinemic patients.
- Macroprolactinemia was present in 66.6% (18/27) of diabetic patients with hyperprolactinemia.
- The prevalence of macroprolactinemia was significantly higher in diabetic patients (66.6%) compared to non-diabetic patients (39.5%, p=0.009).
- Diabetic patients with macroprolactinemia exhibited higher HbA1c levels.
Conclusions:
- Macroprolactinemia is more prevalent in diabetic patients with hyperprolactinemia than in the non-diabetic population.
- Measuring macroprolactin levels is recommended for diabetic patients presenting with hyperprolactinemia.
- Identifying macroprolactin may obviate the need for further diagnostic workup in these cases.
Related Concept Videos
Hypoglycemia and Glucagon
Hyperglycemia
Diabetic Nephropathy
Oral Hypoglycemic Agents: Glinides
Glucagon-like Receptor Agonists
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by the...
Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists
