Montana Field Guides. Of the three North American weasels (Genus Mustela), the Short-tailed Weasel is intermediate in size. Males are distinctly larger than females of the same age. During summer the fur is dark brown with white (not buff) under-parts, white feet, and white along the inside of the hind legs. The tip of the tail is black.
There's no single test for Parkinson's disease, but symptoms and response to treatment can guide diagnosis. Symptoms of Parkinson's disease vary from person to person, but they tend to get worse over time. The signs and symptoms of Parkinson's are divided into two categories: motor (movement-related) and non-motor.
For example, the Kastle-Meyer test will show that a sample is not blood, or that the sample is probably blood (but it may be one of a range of less common substances). Further chemical testing is required to prove that the substance is blood. Confirmatory tests are the tests required to confirm the analysis. Confirmatory tests cost more than simpler presumptive tests, which is why presumptive tests are often made to see if confirmatory tests are necessary. In a like manner, in medicine, a presumptive diagnosis identifies the likely condition a patient has, and a confirmatory diagnosis confirms the presence of the condition.