Thanks Terry, Alex and Babs, looks like we could start a whole new forum on Light Chains alone. Dont quite get all of the info but I will read through and get back if I need more help. When I had my last visit to hospital they told me the light chain amount as 238,which was very low from 928, and then he said "sorry we are using Siemens scale " and he then reajusted it to 928 as it was the previous visit, so maybe we could be using differant scales, any one know for sure. Ted.