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 area code in red is Area Code 916; all others in blue are California area codes. Area code 916 is a California telephone area code that was one of the first three original area codes established in California in October 1947.The area code is based in the state capital, Sacramento. Originally, it covered the far northern portion of the state.he area code in red is Area Code 916; all others in blue are California area codes. Area code 916 is a California telephone area code that was one of the first three original area codes established in California in October 1947. The area code is based in the state capital, Sacramento.