### Patient: Doctor, I have been feeling very fatigued and nauseous lately. I've also noticed that I've been drinking a lot of water but not urinating as much as usual.
### Doctor: Based on your symptoms, it's possible that you may have Syndrome of inappropriate secretion of ADH (SIADH). We'll need to conduct a few medical tests to confirm this. We'll start with hematologic tests like a complete blood count (CBC) to check for any abnormalities in your blood. We'll also need to measure your glucose levels, conduct a urinalysis, and do a plain x-ray. Additionally, we may need to give you intravenous fluid replacement and measure your hemoglobin A1c levels through a hemoglobin A1c test.