Item Value
Test name Cortisol, serum
Available Stat? No
Turn around times 1-3 days
In House Availability Test available on day shift, 7 days per week.
Performed by China Basin Chemistry
Normal range Adult Reference Range

AM (before 10am) 4 – 19 ug/dL
PM (after 5pm) 3 – 17 ug/dL

Reference range adopted from vendor performed studies and verified by running lab personnel.

Pediatric Reference Range

Age Range
2 - 14 days 0.5 – 12
15 days – < 1 year 0.5 – 17
1 year - < 9 years 2 – 11
9 - < 14 years 2 – 13
14 - < 17 years 3 – 16
17 years – < 19 years 4 – 18

Pediatric reference ranges adopted from CALIPER Pediatric Reference Interval study performed on random samples using the Abbott Architect i2000 assay. Morning samples gave results approximately 10% higher than afternoon samples.
Bailey et al. Clinical Chemistry 59:9 1393–1405 (2013)
Container type Preferred: Gold top or Red top; Acceptable: Green Top (Sodium/Lithium Heparin)
Amount to Collect 1 mL blood
Collection Instructions A morning sample is usually recommended.
Sample type Serum

If you have additional questions regarding this test, please call: 415-353-1667