UV Light Causes Specific Types of Dark Spots. 1  Melasma: Itâs a common condition characterized by grayish patches on the face, forehead or on the upper lip. 2  Solar Lentigines â Freckles: These are red or brown raised spots caused by long term exposure to the sunlight. 3  Ephelides: These fall under the category of freckles.
What is the antibody titer test? The antibody titer is a test that detects the presence and measures the amount of antibodies within a personâs blood. The amount and diversity of antibodies correlates to the strength of the bodyâs immune response.
tiÂ·trate (tÄ«â²trÄtâ²) tr. & intr.v. tiÂ·tratÂ·ed, tiÂ·tratÂ·ing, tiÂ·trates To determine the concentration of (a solution) by titration or perform the operation of titration. [From French titrer, from titre, titer; see titer.] tiâ²tratâ²aÂ·ble adj. tiâ²traâ²tor n.