Post-Prostatectomy Surveillance Guidelines

Initial Post-Operative PSA Testing

The National Comprehensive Cancer Network (NCCN) recommends obtaining the first PSA at 6 weeks to 3 months after surgery to allow adequate washout time and avoid false elevations from surgical inflammation 4
PSA should drop to undetectable levels within the first 2 months after radical prostatectomy, with a threshold of <0.1 ng/mL or <0.2 ng/mL depending on assay sensitivity 2
If PSA is detectable on initial testing, repeat in 1-3 months to confirm elevation and calculate PSA doubling time (PSADT) 3

The American Cancer Society recommends PSA testing every 6-12 months for the first 5 years after radical prostatectomy, then annually thereafter 1, 2
For high-risk patients, consider PSA testing every 3 months during the first 2 years due to increased recurrence risk 1
The NCCN recommends every 6-12 months for 5 years based on uniform consensus, with annual testing sufficient for long-term surveillance after 5 years 1, 2

The most widely accepted definition of biochemical recurrence is PSA ≥0.2 ng/mL confirmed on a subsequent test, used in 35 of 145 studies reviewed 6
This threshold represents the optimal balance between sensitivity for detecting true recurrence and specificity to avoid false positives from benign remnant tissue 6
Any detectable PSA should be confirmed with repeat testing to eliminate laboratory error before declaring biochemical failure 6

Refer immediately to the primary treating specialist for any confirmed detectable or rising PSA, as it suggests residual or recurrent disease 2
Salvage radiotherapy should be offered when PSA is rising and there is no evidence of distant metastases, with better outcomes when PSA <2.0 ng/mL at treatment initiation 7

Perform annual digital rectal examination (DRE) to monitor for local recurrence, as rare cases can occur without PSA elevation 1, 2
No routine imaging is necessary before biochemical recurrence unless complications are suspected, but MRI can identify local recurrence with PSA <1 ng/mL if salvage therapy is being considered 3

Low-risk patients should follow standard surveillance every 6-12 months for 5 years, then annually 1, 2
High-risk patients should have PSA testing every 3 months for the first 2 years, then every 6 months until 5 years, then annually, with a lower threshold for salvage intervention given higher recurrence risk 1, 4