The first step when having a PSA of 29 ng/ml, and after insuring a normal urine test, is to do a prostate biopsy.
If the biopsy was done and a cancer was diagnosed, the treatment depends on the digital rectal exam (DRE), the pathology result and the imaging studies that are mandatory when having a PSA of 29.
The pathology result will define the Gleason score.
DRE and imaging tests will show the extension of the disease.
Depending on all those tests, you might have a large range of options.