Guide. A cortisol test is done to measure the level of the hormone cortisol in the blood. The cortisol level may show problems with the adrenal glands or pituitary gland.
Berkeley lies within telephone area code 510 (until September 2, 1991, Berkeley was part of the 415 telephone code that now covers only San Francisco and Marin counties), and the postal ZIP codes are 94701 through 94710, 94712, and 94720 for the University of California campus.
The states using the most area codes are California which is currently using 32 area codes, Texas 27 area codes, Florida 18 area codes, and New York 19 area codes. Although area codes are not assigned based upon population the locations with greater populations have an increased demand for area codes. The non-geographic area codes utilized in the United States are 456, 500, 533, 544, 566, 577, 700, 710, 800, 844, 855, 866, 877, 888 and 900. While many United States locations are assigned a ...