Reference Documents

Our reference documents contain all the information you need to test with us. This includes materials to assist you in selecting kits, determining the most appropriate testing method, and interpreting test results, with the goal to help you improve your patient’s health and wellness.

Casestudy Postm Estrogen Dominance

Casestudy Postm Excess Progesterone

Casestudy Prem Estrogen Dominance

Casestudy Prem Hysterectomy w/out Oophorectomy

Casestudy Young Prem Estrogen Dominance

Contamination of Test Results

Directory of Tests

In the Directory of Tests, you will find a list of each test available with the CPT code and sample type for each.

Dried Blood Spot Reference Ranges

ZRT's reference ranges for hormone and analytes tested in dried blood spot.

Dried Urine Hormone Metabolites Reference Ranges

ZRT's references ranges for hormone metabolites tested in dried urine.

Dried Urine Neurotransmitter Reference Ranges

ZRT's references ranges for neurotransmitters tested in dried urine.

Heavy Metals & Essential Elements Reference Ranges

ZRT's reference ranges for heavy metals and essential elements tested in dried urine and blood spot.

Hormone Metabolites Reference Guide

ZRT offers five hormone metabolite profiles, giving a broad range of choices for an assessment of how patients are metabolizing a variety of hormones.

LCMS Dried Blood Spot Reference Ranges

LCMS Saliva Reference Ranges

ZRT Laboratory's Saliva, Blood Spot, Saliva + Blood, Neurotransmitter, and Heavy Metals & Essential Elements test kits lay flat on a wood background

Overview of Kits

In the Overview of Kits, you will find information on each test kit available with a list of the profiles included in each.

Patient Glossary

In the Patient Glossary, you will find a list of terms commonly used by ZRT and a definition for each.

Progesterone Delivery Publication

Resource Order Form

Patient literature and displays available to order.

Saliva Reference Range Determination

ZRT's saliva reference range determination describes the methodology used by ZRT in determining reference ranges for saliva tests.

Saliva Reference Ranges

ZRT's reference ranges for hormones and analytes tested in saliva.

Saliva Testing: Scientific Evidence of Testing Accuracy

Overview of the accuracy and relevance of saliva testing for clinical purposes.

Serum Reference Ranges

ZRT's reference ranges for hormone and analytes tested in serum.

Male doctor talking with female patient in front of a window with a clipboard in his hands.

Symptom Guide

Understanding the ZRT tets report symptoms page and symptoms categories

Test Kit Order Form

Testing Catalog

Our Testing Catalog has all the information on what is included in each test, the ideal patient for each test, and an explanation of each sample type and when to use them.

Younger doctor in blue scrubs and a lab coat, smiling at an older women in a pink blouse

Testing with ZRT

Testing with ZRT has information on our testing, interpreting our test results, working with ZRT, and all the administrative information needed to bring ZRT testing into your practice.