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