Effects of exposure to EMF from 915 MHz RFID system on circulating blood cells in the healthy adult rat

Abstract

Overview

We researched the impact of 915 MHz radiofrequency identification (RFID) signals on rat blood cells. The study examined effects on rats exposed to RFID at a whole-body specific absorption rate (SAR) of 2 W/kg for extensive periods.

Findings

• Increased numbers of red blood cells, hemoglobin, hematocrit, and red blood cell indices in RFID-exposed rats compared to controls.
• White blood cell, including lymphocytes, counts decreased in RFID-exposed rats, though T-cell counts and CD4+/CD8+ ratios showed no significiant differences when compared to sham-exposed groups.
• Experimental conditions maintained circulating blood cell counts within normal physiological response ranges despite significant changes suggesting moderated but noticeable influence from RFID exposure.
• No significant changes in body temperature were observed post-exposure, ensuring that thermal effects did not skew blood cell count data.

Conclusion

While there is no immediate indication of harm from RFID exposure as blood values remained within safe ranges, the overall decrease in specific immune cells and alterations in red blood cell metrics under continuous exposure conditions points to potential underlying health impacts. Cautious interpretation and further study are recommended to fully understand the implications of these findings, related to prolonged RFID exposure.