Normal lab values
To assist physicians in the interpretation of RigiScan data, GOTOP Medical is pleased to provide the following ten case studies conducted by the Uro-Center® Of San Diego. The Uro-Center of San Diego has used the RigiScan ® Monitor to evaluate over 500 patients complaining of erectile dysfunction. Their current work-up consists of:
Their current work-up consists of:
- General medical history
- Sexual history
- Sleep history
- Physical exam
- Serum evaluation
- Doppler study (pre-and post-exercise)
- Electrophysiological tests
- 3 nights of RigiScan monitoring
From this extensive experience, Bonnie Johnson, N.P., Clinical Director for the Uro-Center, has summarized the following guidelines by urologists at the clinic.
| Test | Normal Range |
| Serum Evaluation | |
| Glucose (fasting) | 62-128 mg. /dl. |
| TST | 300-1000 ng. /dl. |
| Prolactin | >18.5 ng. /ml. |
| LH | <25.0 mlU./ml. |
| Doppler Study (pre- and post-exercise) Penile brachial index (PBI) | |
| Normal | >.75 |
| Borderline abnorma | 61-.74 |
| Abnormal | <.60 |
| RigiScan Monitor Traces | |
| Frequency | 3-6 events/8-hour night |
| Duration | 10-15 minutes/event |
| Tumescence | |
| Base | 3 cm increase over resting tumescence |
| Tip | 2 cm increase over resting tumescence |
| Rigidity | |
| Non-Rigid | <40% |
| Buckling will occur, but erection may be Stuffable | 40-70% |
| Non-buckling, rigid | >70% |
In addition, the following trends are considered abnormal when they occur during the majority of events over several nights:
| Term | Definition |
| Dissociation | distal penile shaft softening—the RigiScan trace would show a base reading of abnormal/normal tumescence |
| Uncoupling | normal tumescence with significantly reduced or absent rigidity, may occur at the base and tip of the penis concurrently |