Nickan Research Institute Journal of Renal Endocrinology 2423-6438 4 1 2018 01 01 Effect of gold nanoparticle contamination in urine amphetamine test e20 e20 EN Beuy Joob Viroj Wiwanitkit Journal Article 2018 10 03 2018 12 02 Nanotechnology is widely used at present. The effect of nanoparticle on health aspect is an important consideration. Whereas the nanoparticle is proven useful in clinical aspect, the negative effect should be mentioned. The interference of nanoparticle on clinical laboratory investigation is an important issue. Here, the authors assess the effect of gold nanoparticle contamination in urine amphetamine test. According to the study, the interference can be seen. The false positive of the test due to the contamination is observed. The effect of nanoparticle on the clinical forensic laboratory test is the new issue to be considered at present.