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.
Area code 415. The 415 area code belongs to the state of California (CA) and some of the locations covered are San Francisco, San Rafael and more:rea code 415. The 415 area code belongs to the state of California (CA) and some of the locations covered are San Francisco, San Rafael and more: