The test involves plucking about 50 hairs from the head, typically at the back of the scalp, so your dermatologist can look at them under a microscope and determine how much of the hair is in the resting, growth, and fall-out phases. Next, a vial of blood is sent to a lab to check hormone and nutrient levels ($100 and up, depending on insurance). If low levels of iron, or high levels of male hormones, like androgens, are contributing to your hair loss, for example, both can be treated through oral supplements or medication. 

Scientists from the Indiana University School of Medicine have for the first time created skin with hair follicles using mice stem cells. Research was led by Professor Karl Koehler. The team was able to grow both the epidermis and dermis layers of skin to create a realistic skin model. An interesting quote from Professor Koehler: “It looks like a little ball of pocket lint that floats around in the culture medium. The skin develops as a spherical cyst and then the hair follicles grow outward in all directions – like dandelion seeds.”
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