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The effects of exposure of human blood samples to a 900 MHz electromagnetic field on platelet function and structure should be investigated.
16 healthy volunteers from laboratory staff gave 2 blood samples, respectively. One sample from each donor was exposed to the electromagnetic field (exposure group), the other sample was prevented from "close contact" (see "expo parameters" for details) to sources of radiofrequency electromagnetic fields (control group).
ばく露時間: continuous for 30 minutes
|ばく露時間||continuous for 30 minutes|
|Distance between exposed object and exposure source||1 cm|
|チャンバの詳細||3.5 ml evacuated plastic tube containing buffered sodium citrate|
|ばく露装置の詳細||samples were placed in a plastic rack in 1 cm distant from the chassis of a commercial smartphone placed in a horizontal position; immediately after the samples had been positioned in the plastic rack, a call was placed on the smartphone and the communication was manually activated with 3G and Wi-Fi connections disabled (remark EMF-Portal: it is unclear which signal was actually used for exposure); during this period, the rack with samples and smartphone was gently inverted upside-down once every 5 min to prevent sedimentation of corpuscular blood elements|
|Additional information||control samples were placed in another plastic rack for 90 min. and the rack was gently inverted upside-down once every 5 min. during 30 min. period (as for the samples of the exposure group); the untreated blood samples were carefully prevented from being in close contact (< 1 m) to mobile phones or other radiofrequency sources throughout the study period|
No parameters are specified for this exposure.
Exposure of human blood to the electromagnetic field induced a significant prolongation of collagen-epinephrine aggregation and a significant increase of mean platelet volume compared to the control group. Collagen-ADP aggregation and platelet count did not show significant differences between the groups.
The authors conclude that exposure of human blood samples to a 900 MHz electromagnetic field might disturb platelet function and alter platelet structure.