I always get an ultra sensitive test--to two decimal places. Due to the uro's office staff checking the wrong box on the lab form, Quest did only a standard test to just one decimal place. They reported the result as 0.1 without a
It is currently detected using a blood test that measures PSA levels. Although it provides early diagnosis, the PSA blood test has a low specificity (high false positives) with about 75 per cent
My urologist threshold was PSA=0.06 in RP success judgement but some use a threshold of 0.03. However, both numbers indicate remission. As far as I am aware of, the two decimal places (0.XX) ultra sensitive assays, independently of the maker (Abott, Boehringer,Cobas, etc), got tolerances in the LLD of (0.01, 0.02 and 0.05). LLD ofUltrasensitive PSA (HAMA),Ultra PSA (HAMA),Prostate Specific Antigen. LOINC® Codes, Performing Laboratory . Service Area must be determined. Patient Preparation. Draw before rectal examination or biopsy procedure. Methodology. Immunochemiluminometric Assay (ICMA) Reference Range(s)The optimal cut-off values for detecting prostate cancer were defined as 4.92 ng/mL in PSA2 (sensitivity, 65.4%; specificity, 56.5%; area under curve (AUC), 0.64; P=0.002), 0.155 ng/mL/g in PSAD (sensitivity, 73.1%; specificity, 71.2%; AUC, 0.762; P Specifically, some institutions use the ultra sensitive PSA that measures down to .015. Others use the regular PSA that goes to 0.1. Some say the ultra sensitive test detects a possible recurrence at an earlier time.
Just had my 9 month PSA test and it is still undetectable. There are other things to consider like tumor volume, pre surgery PSA and Gleason score. The waiting is the worst. Also, be aware that even if the first test does show some detectable PSA that it might mean that some prostate tissue was left behind and is still producing PSA.
Prostate-specific antigen (PSA) is a protein that forms in the prostate gland. A PSA test calculates PSA levels in the blood. While it cannot stage cancer by itself, it is a useful screening tool.