The antinuclear antibody (ANA) test is the go-to screening test for lupus. If the result is negative, says Dr. Gilkeson, you can almost guarantee that a patient doesnât have lupus. On the other hand, a positive result is much less clear; 90% to 95% of people who have a positive ANA test donât have lupus.
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In a subtractive set of colors, as in mixing of pigments or dyes for printing, the colors magenta, yellow and cyan are normally used. See RGB color model, and CMYK color model for more on these popular sets of primary colors. 1 Biological basis.