← Return to Comparison of PSA test results from Quest and Labcorp

Discussion
melvinw avatar

Comparison of PSA test results from Quest and Labcorp

Prostate Cancer | Last Active: Jan 11 2:23pm | Replies (15)
Comment receiving replies
Profile picture for windrider354 @windrider354

I might also note that my last five PSA results from Quest over a span of 18 months have been 0.05, 0.04, 0.04. 0.04 and 0.05. Although technically the difference from 0.04 to 0.05 could be calculated as 25%, the results are reported only to the nearest 0.01 so these values cannot be considered significantly different.

Jump to this post

Replies to "I might also note that my last five PSA results from Quest over a span of..."
melvinw | @melvinw | Jan 10 5:08pm

@windrider354 Yes, those are insignificant differences to me. And none of those values are close to anything clinically significant. Glad to see those numbers!

The ultra sensitive tests are new to me. For the ten years since my RARP (2015-2025) my urologists only ran normal PSA tests. Going forward (post IMRT) I will be doing us PSA tests from Labcorp, unless something forces a change. Next PSA test is in mid February.

None of the urologists, nor oncologists that I have worked with seem to be concerned about using different labs or methods. I obsess over consistency. I guess that is the difference between a clinical and scientific mindset.

Btw, do happen to know the limit of detection for the Labcorp us PSA test?

VIEW AND REPLY