TEST SPECIFICATIONS

All testing performed at ZRT Laboratory is done to high standards of accuracy and uses state-of-the-art methodology. Tests are validated with internal and/or external controls.

A full list of our tests offered commercially including the methodology used can be seen in our Test Directory. We test a comprehensive range of steroid metabolites in dried urine with creatinine correction. Note that steroid assays in saliva for research purposes can also be performed by mass spectrometry.

For some of our commercial tests using our innovative methods in saliva, dried blood spot, and dried urine, see the Test Specifications listed below for more information on testing validity.


Please inquire about tests available for research.

 

Analyte Sample Type

Estradiol

Saliva, DBS

Progesterone

Saliva, DBS

Testosterone

Saliva, DBS

DHEA sulfate

Saliva, DBS

Cortisol

Saliva, DBS, Urine

Estrone

Saliva

Estriol

Saliva

SHBG

DBS

25-hydroxy Vitamin D2/D3

DBS

Thyroglobulin

DBS

Thyroxine (T4), total

DBS

Free T4

DBS

Free T3

DBS

TSH

DBS

TPO antibodies

DBS

Cholesterol, total

DBS

HDL cholesterol

DBS

Triglycerides

DBS

Hemoglobin A1c

DBS

Insulin

DBS

Hs-CRP

DBS

LH

DBS

FSH

DBS

PSA

DBS

IGF-1

DBS

Lead

DBS

Iodine

Urine

Selenium

Urine

Bromine

Urine

Arsenic

Urine

Cadmium

Urine

Mercury

Urine

Creatinine

Urine

Melatonin

Urine

Cortisone

Urine