Several blood tests can help diagnose dehydration, and the specific ones ordered may depend on the individual's symptoms and overall health. Here are some common tests:
- Electrolyte Panel: This test measures the levels of electrolytes in your blood, which are essential for maintaining fluid balance. Dehydration can lead to elevated levels of sodium, chloride, calcium, and potassium.
- Comprehensive Metabolic Panel (CMP): This panel assesses various aspects of kidney function, liver function, and electrolyte balance. Elevated BUN (blood urea nitrogen), creatinine, and a high BUN to creatinine ratio can indicate kidney stress due to dehydration. Additionally, an elevated albumin level might suggest water loss.
- Serum Osmolality: This test measures the concentration of dissolved particles in the blood. A higher osmolality suggests dehydration.
- Complete Blood Count (CBC): While not a direct indicator of dehydration, a CBC can show elevated red blood cell levels, which may suggest dehydration or other conditions like anemia.
It's important to note that a single blood test doesn't necessarily confirm dehydration, and a healthcare professional will consider multiple factors, including your medical history, symptoms, and other lab results.
