Did the lab report say what "normal" values are? They usually do but your doctor might not have given you that page. I'm not sure what normal values are either. I plan to have a long discussion about it at my next endo visit. Renin is related to salt retention so it makes sense to increase the florinef if the renin level is high. Endos also usually consider blood pressure when determining dosage of florinef. Hopefully someone out there has more info. Joan (are you out there) is great at explaining all this stuff!