Replies to @jeffmarc Thanks for your comments. Done by the same lab.

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PSA change from < .04 to < 0.1: Problem or no big deal?

Prostate Cancer | Last Active: Mar 9 6:37pm | Replies (21)

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@johnny8924

@jeffmarc
Thanks for your comments.
Done by the same lab.

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Replies to "@jeffmarc Thanks for your comments. Done by the same lab."

jeff Marchi | @jeffmarc | Mar 3 3:58pm

@johnny8924
Ask the lab if the < .1 was ultra sensitive. The .04 is.

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retireditguy | @retireditguy | Mar 3 4:37pm

@johnny8924 -- I've also used a single lab and had exactly the same difference in results at different times (ie. "< .1" and ",.04"). In my case, I got a (free) user account on the lab's web site and was able to print a "report" of each test. That report allowed me to see that they had used different types of machine (with different sensitivity) to measure the psa. I know the doctor orders for the psa test were identical, but I suspect the lab just used the more sensitive test for their convenience. I believe with the "< .04" and "< .1", the "< " symbol is indicating that the psa was unmeasurable on that machine. All that said, it never hurts to discuss it with your doctor or the lab. Best wishes.

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