Study type: Medical/biological study (experimental study)

Human leukocyte functions and the U.S. safety standard for exposure to radio-frequency radiation med./bio.

Published in: Science 1983; 220 (4594): 318-320

Aim of study (acc. to editor)

To study effects of microwaves at energies relevant to current public safety recommendations on human mononuclear leukocytes.



Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: CW
Exposure duration: continuous for 2 h
  • SAR: 0.5 mW/g minimum
  • SAR: 4 mW/g maximum

Exposure 1

Main characteristics
Frequency 2.45 GHz
Exposure duration continuous for 2 h
Modulation type CW
Exposure setup
Exposure source
Setup waveguide inside a water-jacketed CO2 incubator
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
SAR 0.5 mW/g minimum calculated - -
SAR 4 mW/g maximum calculated - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Exposure to microwaves (at SAR up to 4 mW/ml) resulted in no detectable effects on viability or on unstimulated or stimulated DNA, RNA, total protein, or interferon synthesis by human mononuclear leukocytes. The results were highly reproducible and provided no evidence that current safety standard recommendations are inappropriate.

Study character:

Study funded by