• Analyze hormone levels from home - without a prescription*
• Easy saliva collection with provided test tubes
• Choose from 8 different hormones
• Send samples to lab and receive results in 7-10 days
• Includes pre-paid mailing envelope for sending sensitive sample materia

What hormones can I test from the (1) Hormone Saliva Test?

You can choose one of the following hormones:

Estrone (E1)
Estradiol (E2)
Estriol (E3)
Free Testosterone 
Progesterone
DHEA Sulfate
Cortisol

Once results are received by ZRT labs, results are generally returned in 7-10 days.

* Restrictions apply for CA and NY residents. More info

* Shipping from anywhere outside the United States is no prepaid. Return shipping will be the responsibility of international customers. 

What is the difference between saliva testing and blood testing?

Compared to blood testing, saliva testing tests for the "bio-available" hormones, rather than the "total" hormones. This can be a benefit to the user, by evaluating the "active" hormone levels, as compared to the "total" levels often tested for in a blood test.

Remember, there are three kinds of testosterone in the blood - SHBG bound, albumin bound, and free - consisting of 60-70%, 30-40% and 1-3%, of the testosterone in the blood, respectively. The saliva tests used here, test for the "bio-available" testosterone. The bio-available testosterone is the sum of "free" plus the "albumin bound" testosterone.

Essentially, all non-SHBG bound testosterone is considered the "bio-available" or "active" testosterone. Albumin bound testosterone is considered active due to testosterones relative loose binding to the protein and ease of dissociation. ZRT laboratories uses the standard testosterone reference range of 44-148 pg/ml, however a more progressive "optimal range" for bio-available testosterone would be near 100-200 pg/ml. It's important to remember that this range used in these saliva testing kits is different than the "total testosterone" often measured in blood, of which the typical range is 300-1100 ng/dl.

- MORE INFO COMING SOON! -

Note: Primordial Performance LLC is not affiliated with ZRT laboratories in anyway. Primordial Performance is a 3rd party vendor for hormone testing kits and therefore has no control over hormone analysis or results.