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Reference Guide
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ZRT Laboratory
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Cortisol (C)

Cortisol (C)

By 
ZRT Laboratory
Cortisol (C)
ZRT Laboratory
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Cortisol (C)
 test.
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About the Test

Ordering the Cortisol Test with ZRT

Cortisol is a hormone that is made by the adrenal glands, and the pituitary gland tells your adrenal glands how much cortisol to make in response to:

  • Stress (cortisol is sometimes called the "stress hormone")
  • Inflammation
  • Regulating blood sugar and metabolism (how your body uses food for energy)
  • Controlling blood pressure

In a healthy individual, cortisol levels increase and decrease at different times of the day. It's usually higher in the morning and lower at night unless a person works during late hours or has changing shifts.

Factors that can affect cortisol levels:

  • Exercise
  • Hypothyroidism
  • Infection
  • Injury or disease
  • Medications such as hydrocortisone, prednisone or birth control pills, obesity, pregnancy
  • Physical or emotional stress

Which Patients is the Cortisol Test with ZRT Best Used For?

Symptoms That May Lead A Practitioner to Order the ZRT Cortisol Test include:

High Cortisol Symptoms:

  • Insomnia
  • Anxiety
  • Sugar cravings
  • Feeling tired but wired
  • Increased belly fat
  • Bone loss

Low Cortisol Symptoms:

  • Chronic fatigue
  • Low energy
  • Food and sugar cravings
  • Poor exercise tolerance or recovery
  • Low immune reserves

About the Test

This is a single-marker test measuring cortisol.

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Lab Test Information
Price
$
50
.00
 $
27.50
Sign up to View
Lab Company
ZRT Laboratory
Sample Type
Saliva
Shipping Time
2 - 3 days
UPS, USPS
Turnaround Time
7 days
Test Preparation Starts
Up to 12 hours before collection
Number of Collection Days
1 day
Methods Used For Processing
LIA
Lab Certifications
CLIA Certified
CAP Accredited
ISO 15189
COLA Accredited
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