Assay measurements at or near the detection threshold are still not very reliable due to variance, i.e. the fluctuation in the reported value between successive tests in a controlled environment. So, even if the assay can "detect" a 0.04, it may not be able to consistently produce the same result at such a low number. As the measured value moves away from the threshold, assay variance improves. Add to that the probable uncontrolled environment of your lab and natural background noise levels of PSA that the body can produce, and measuring PSA down to the hundredths digit becomes very muddy.
Age:45 (44 when diagnosed)
Father diagnosed and cured at age 52.
08/21/07: Diagnosed with T1c cancer
1 of 12 biopsy cores positive; 10% tissue
Gleason score: 3+3=6
PSA level prior to biopsy: 4.3 (velocity < 0.4ng/ml)
10/19/07: da Vinci prostatectomy by Dr. Vipul Patel
Difficult surgery due to prostate inflammation.
Both nerve bundles spared.
Spongy erections began within 24hrs of surgery!
10/24/07: Catheter out; down to 1 Serenity pad/day next day.
Final pathology: neg margins, no capsular penetration,
Gleason 3+3=6, 5% tumor involvement, multi-focal.
11/04/07 First usable erection with Cialis
11/22/07 Thanksgiving - Bye-bye, pads
01/17/08 First post-surgery PSA result: < 0.008 ng/ml
03/17/08 Erection quality mostly back to pre-surgery levels with Cialis;
have not tried without meds yet.
04/23/08 Second post-surgery PSA result: < 0.008 ng/ml
07/30/08 Third PSA: 0.01 ng/ml
11/04/08 One year PSA: 0.01
Still taking 10mg Cialis every other day - enjoying the results
too much to stop yet.
02/07/09 Taking 5mg Cialis every other day - having too much fun to try
to stop for now.
03/23/09 PSA: 0.02