After purchasing a staff member of Nutrition Dynamic will contact you within 1 – 2 business days to acquire any additional information.
All Lab Sales are Final
*For U.S. order only. AN ADDITIONAL $40 FEE WILL BE APPLIED FOR INTERNATIONAL SHIPPING.*
What is the Cortisol Awakening Response (CAR), and how do we test for it?
When we open our eyes upon waking, cortisol levels naturally begin to rise by an average of 50%. 30 minutes after waking, cortisol levels will still show this sharp increase. By 60 minutes after waking, cortisol levels have peaked and begin to decline. Measuring this rise and fall of cortisol levels at waking can be used as a “mini stress-test”. Research shows that the size of this increase correlates with HPA-axis function, even if the individual sample measurements are all within range. A quick saturation of saliva swabs upon waking, and at 30 and 60 minutes after waking, provide what is required to assess a patient’s cortisol awakening response. Additional samples at dinner and bedtime provide the daily picture of free cortisol.
What’s Included in the Cortisol Awakening Response Test?
The CAR test uses five saliva samples. These samples are collected over the course of one day, from waking to bedtime. Five measurements each of cortisol and cortisone are analyzed using LC-MS/MS to provide the up-and-down pattern throughout the day, as well as the CAR calculation.
These labs are for nutrition analysis only. They are not intended to diagnose, treat, cure, or prevent disease. They are not intended to replace the advice of a physician. Always consult your physician on any matters regarding your health and before nutritional changes.
RESTRICTIONS APPLY FOR ORDERING LAB TESTS IN THE STATES OF NEW YORK AND RHODE ISLAND. Not available in MARYLAND. If you live in one of these states, please contact Labs@NutritionDynamic.com. The additional international shipping fee will be invoiced after the purchase of the lab. Contact Labs@NutritionDynamic.com for details.