gibson white china

I have plain white ceramic plates from Gibson that were made in China, could they contain lead?
The plates have no designs on them, cept for something that’s sort of ridged around the rim area, but it’s just an imprint, and isn’t colored. The entire plates are white. On the bottoms of them it says “Gibson” – “China”. Could these have lead in them, or does that only apply to the ones that are colored and painted? If they might or probably do contain lead, can someone link me to a kit I can purchase, with which to test them?
This is what my plates look like.
http://www.robbinsnest.com/images/dt/gib/gibfr-dp.jpg
I found this site and it showed the lead content of a ton of plates that were tested. Gibson China had 5.7 but Gibson China – White had 0. Which one is mine? Mine just says Gibson China on the back, but since it’s white, isn’t it the one without lead?
its a definite possibility ur plates were still painted cuz they didnt come out that shade so its a 75% chance it contains lead u might want to get that checked go to a toy factory they have lead sensors or even a toy store toys r us has the sensors
chinese gibson les paul replica guitar