Thyroid-Stimulating Hormone (TSH). Guide. A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH is produced when the hypothalamus releases a substance called thyrotropin-releasing hormone (TRH). TRH then triggers the pituitary gland to release TSH.
A Raven is black but depending on which way the light hits it they change to other colors like bluish, dark red, or greenish. There are white Ravens but are not albino.
Chestnut (Red Family). Body color dark red or brownish red; range from very light to liver chestnut; liver chestnut can be distinguished from black or brown only by the bronze or copper highlights on the legs; mane and tail usually dark red or brownish red, but may be flaxen.orrel (Red Family). Body color reddish or copper-red; mane and tail usually same color as body, but may be flaxen or very dark. Dun (Black Family). Diluted body color of yellowish or gold; mane and tail are black or brown; has dorsal stripe and usually zebra stripes on legs and transverse stripe over withers.