06/17/2026
Are you feeling run down all the time? 🥱 There are two common starting points for testing: a thyroid function test and a complete blood count (CBC) test. A thyroid test looks at your TSH levels to see if your thyroid is under active, and a CBC can uncover anemia. Either condition can make you exhausted, but both are very treatable. If you’re always feeling tired, talk to your doctor about lab testing with Quest. Or buy your own test online at questhealth.com.