Thank you for pointing out the difference in using different labs. My nephrologist is over 100 miles from my home one way. Because I plan on having some telemedicine visits I request that my lab orders be sent to my local lab for consistency in processing. So thankful for technology, I and all of my doctors can review my medical and track my treatment plan on line. I also weigh my self at home on the same scale about the same time several times a week. CKD is a life changer but I have learned that it is manageable with good knowledge and a good support system. My thanks to all who contributed to this site.