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.
Here's a handy rule of thumb: the telephone area code 415 generally means San Francisco (although it includes a few nearer parts of the North Bay like Marin); 650 is the Peninsula, 510 and 925 is for the East Bay, 707 for the North Bay or Wine Country and 408 and 669 are for the South Bay or the Santa Clara Valley.