SKU: 57176235104

ZRT Cortisol Test

Sale price$98.89 Regular price$109.88
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Description

ZRT Cortisol TestTHIS TEST INCLUDES A 30 MINUTE CONSULTATION WITH ONE OF OUR DIETITIANS UNLESS THE "NO REVIEW" OPTION IS SELECTED During this consultation your consulting dietitian will email you the results of your test, go over the report, create a plan of action and answer any questions you may have. After purchasing a staff member of Vidal Coaching will contact you within 1 2 business days to acquire any additional information and to schedule your consultation.

THIS TEST INCLUDES A 30-MINUTE CONSULTATION WITH ONE OF OUR DIETITIANS UNLESS THE "NO REVIEW" OPTION IS SELECTED

During this consultation your consulting dietitian will email you the results of your test, go over the report, create a plan of action and answer any questions you may have.

After purchasing a staff member of Vidal Coaching will contact you within 1 – 2 business days to acquire any additional information and to schedule your consultation.

All Lab Sales are Final


SHIPPING INCLUDED*

*For U.S. order only. ADDITIONAL FEES MAY APPLY FOR INTERNATIONAL SHIPPING.*

 

 

Cortisol Patterning 

Cortisol is synthesized by the adrenal glands and released into the bloodstream in response to stress signals from the brain. In the bloodstream cortisol is mostly bound up by Cortisol Binding Globulin (CBG) and albumin, leaving only about 1-3% bioavailable to enter tissues and invoke a biological response. The bioavailability of cortisol can vary considerably due to different levels of CBG; liver synthesis of CBG is controlled by various hormones, such as estrogens, thyroid, and cortisol itself. Salivary cortisol reflects the amount of cortisol that escapes binding proteins, and enters the tissues throughout the body, including the salivary glands and saliva.

As such, saliva is representative of the bioavailability of cortisol to target tissues throughout the body. Saliva collection at four time points throughout the day (morning, noon, evening, and night) provides a simple and convenient means for assessing not only the bioavailability of cortisol but also its circadian pattern of synthesis

 

SALIVA TESTING

Saliva testing is used for measuring hormones like cortisol, estrogen and testosterone, and its non-invasive collection asks patients to spit into a plastic tube. This sampling method allows patients to collect saliva at home at specific times, which is important for accurately measuring hormone levels.

Why do we test hormones in saliva? Steroid hormones in the bloodstream are 95-99% bound to carrier proteins, and in this form are unavailable to target tissues. Saliva testing measures the amount of hormone available to target tissues – the bioavailable amount. For this reason, saliva testing better relates to specific symptoms of excess or deficiency, and is a good option for monitoring hormone therapy.

ZRT is one of the first labs to measure hormones in saliva, and helped establish the method that made saliva hormone testing commercially viable for health care providers and patients around the globe.

This test includes:

  • C(x4)

 

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.


ADDITIONAL FEES MAY APPLY FOR INTERNATIONAL SHIPPING. If you live outside of the United States, please contact [email protected]. The additional international shipping fee will be invoiced after the purchase of the lab. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57176235104

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luv2safari
Lexington, US
★★★★★ 5
Good Quality
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Always the best quality.
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Reviewed in the United States on March 25, 2026
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Amazon Customer
Boise, US
★★★★★ 5
Well made materials.
Arrived on time and well packaged. Good quality materials and exact fit. Perfect fit, Easy to install. Make sure to review installation instruction. Don't put the gaskets in the wrong place. Will buy again from this vender.
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Reviewed in the United States on September 17, 2025
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Outdoorfun
West Palm Beach, US
★★★★★ 5
Good for the $$$
Worked great on my Mercruiser Alpha One Gen 2. Once the bottom unit of the outdrive is off and cleaned it only takes a few minutes to install impeller, seals and housing. A very affordable alternative to taking it to the shop.
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Reviewed in the United States on September 22, 2025
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FrankieJ
Waukegan, US
★★★★★ 5
Fit perfectly and very complete set of parts
Had everything I needed plus some extra parts in the kit. I probably could have just replaced the impeller for slightly less but while everything was disassembled you might as well replace the works. Included - Water Pump Impeller, Housing, Key, Face Plate, Face Plate Gasket, O-Ring, Seal Face and Carrier Assembly Oil Seal
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Reviewed in the United States on October 28, 2025
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chris null
Bozeman, US
★★★★★ 5
Water impeller kit
Worked perfectly for my ‘02 Rinker Captiva 212 with the 5.7 Mercruiser Aloha one outdrive !
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Reviewed in the United States on October 9, 2025

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