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Rolepaul · 08-20-2012, 08:23 AM

Long time ago, in a land far away (okay 27 years ago in San Diego California) I used to work on the Cancer Diagnostic tests, among other things, for a company that no longer exists. I can tell you that eachbatch of chemicals was compared versus a "Standard" however there was significant variation on the lower end values ( the ones not blazing hot), just due to how the product is made. You might see a 9 one time and a 15 the next with the same sample. You need to worry about a trend that increases steadily over an extended period of time 6 months to 24 months, or that goes from 27 to 140. Other wise, from a development team member, do not worry about the results of the tests. The doctors might not be aware of these variations, but they should be. Newer testswill be better, but that is not the case presently.

08-20-2012, 08:23 AM	#11
Rolepaul Senior Member Join Date: Jan 2012 Location: Boulder Colorado as of January 2013 Posts: 389	Re: Obsessed with tumor marker number? Long time ago, in a land far away (okay 27 years ago in San Diego California) I used to work on the Cancer Diagnostic tests, among other things, for a company that no longer exists. I can tell you that eachbatch of chemicals was compared versus a "Standard" however there was significant variation on the lower end values ( the ones not blazing hot), just due to how the product is made. You might see a 9 one time and a 15 the next with the same sample. You need to worry about a trend that increases steadily over an extended period of time 6 months to 24 months, or that goes from 27 to 140. Other wise, from a development team member, do not worry about the results of the tests. The doctors might not be aware of these variations, but they should be. Newer testswill be better, but that is not the case presently.