Red blood cell distribution width predicts two-hours plasma glucose levels during OGTT

Area of Science:

• Endocrinology
• Hematology
• Metabolic Health

Background:

• Red blood cell distribution width (RDW) is a standard complete blood count parameter used in anemia diagnosis.
• Emerging evidence suggests RDW is associated with type 2 diabetes incidence and complications.
• The predictive role of RDW in glucose metabolism disturbances requires further investigation.

Purpose of the Study:

• To investigate the relationship between RDW and 2-hour plasma glucose levels.
• To assess RDW as a potential predictor of abnormal glucose metabolism.

Main Methods:

• A study involving 45 outpatients undergoing a 75g oral glucose tolerance test (OGTT).
• Measurements included hematological parameters and cardiovascular disease risk factors.
• Regression analyses were used to evaluate associations.

Main Results:

• RDW showed a direct association with 2-hour post-load glucose in simple regression (r=0.31, p=0.037).
• RDW independently predicted 2-hour plasma glucose in multiple regression analysis (p<0.01).
• Fasting glucose, triglycerides, and age also independently predicted 2-hour plasma glucose.

Conclusions:

• RDW is significantly associated with plasma glucose concentrations following an OGTT.
• These findings support RDW's utility as a predictor of glucose metabolism disturbances.