What tests should be done for vitiligo? 1.Electrolyte and inorganic element test. 2.Urinary routine. 3.Thyroid function test. 4, metabolite test. For vitiligo condition in a large number of research work, has found vitiligo patients have a variety of laboratory tests abnormal, although most of these abnormalities are non-specific, but for the diagnosis and treatment of the disease and pathogenesis research has a certain reference significance. 1, blood test Can find abnormalities or discover potential visceral lesions from it, identify the cause, can improve the cure rate and facilitate the recovery of vitiligo disease. (1)Blood gas analysis: pH value determination, vitiligo patients 100 cases compared with normal people 100 cases, vitiligo patients average 7.3650, normal people average 7.3888, vitiligo patients blood pH value is slightly lower than normal people. (2) Blood routine: most vitiligo patients measured blood routine have anemia, leukocyte and platelet reduction. (3) immune abnormalities: it has been found that there are a variety of autoantibodies in the serum of vitiligo patients, before or during treatment do some blood tests, from which abnormal or potential in vivo lesions can be found, and then further identify the possible causes to do symptomatic treatment, can improve the cure rate, and is conducive to the recovery of vitiligo. 2, trace elements Vitiligo patients are closely related to low copper. The test zinc, tin, manganese and normal people are not significantly different. Other have serum copper oxidase activity decreased, blood list amine oxidase increased, serum copper blue protein increased. 3.Wood lamp examination Wood lamp is very helpful to determine the subtle difference of pigmentation, melanin absorbs the full wavelength of ultraviolet light, if melanin is reduced, the refraction is strong, showing light color. If the melanin increases, the refraction is weak and dark. Under Wood lamp, the changes of vitiligo epidermal pigmentation are much more obvious under visible light, while the changes of dermal pigmentation are not obvious under Wood lamp.