Although there is no individual test to measure these changes, a thorough physical exam and a basic blood screening and blood chemistry panel can point to areas in need of further attention.
Typically, the Ishihara tests are used to diagnose color deficits.
Very probably it is a humbug.
Urinalysis is used to diagnose many different problems. It can test for urinary tract infection, blood sugar problems, kidney damage, imbalance in calcium, phosphorus, potassium, etc.
Blood tests are used to diagnose maternal antibodies against CMV or fifth disease.
Ultrasound scanning may be used to image the newborn's brain and echocardiography may be used to diagnose heart problems.
electrocardiogram, stress tests, cardiac catheterization, imaging tests such as a chest x ray, blood tests
gamma ray
How do teachers diagnose a learning disability? He can't diagnose the disease if he doesn't know its symptoms. A blood test is used to diagnose thyroid problems.
Blood test and also they will show in an x-ray.
Urine tests will detect human chorionic gonadotropin (HCG).
Tests that detect decreasing lung capacity during the workday are used to diagnose byssinosis.
dxdiag.exe