Final answer:
Saliva is not typically collected by a physician compared to blood, urine, or stool, which are more commonly used for various diagnostic tests.
Step-by-step explanation:
The correct answer to your question is d) Saliva. While physicians do collect bodily fluids such as blood, urine, and stool for various tests to diagnose diseases and monitor health, saliva is less commonly collected. Saliva can be used for certain tests, but it is not as typically collected compared to the other options provided. Blood tests can reveal a lot about one's health, detecting diseases, conditions, and the function of organs. Urine tests can assess kidney function and detect urinary tract infections, among other things. Stool samples can be analyzed for digestive disorders, infections, and even to screen for colorectal cancer.
Now, to address the confusing parts of your question not related to the four options provided:
- Skin evaporation and the air from the lungs are ways the body loses water but are not typically measured by a physician for standard diagnostic purposes.
- Urine is frequently tested, as mentioned above.
- Excessive sweating (hyperhidrosis) can be a medical condition, but it's usually reported by the patient rather than being collected.
- Vomiting or diarrhea can be symptoms of various conditions that a doctor would note but does not typically collect samples of for testing.