How to Collect Your Sample

At ZRT Laboratory, we are committed to making lab testing simple! The short videos below show how to collect a dried blood spot, saliva or dried urine sample for testing.

We also provide links to printer-friendly instructions at the bottom of this page.

If you have additional questions, you can also try reviewing our FAQs.

Saliva Collection Video


Blood Spot Collection Video


Urine Collection Video


Downloadable Instructions

Adrenal Stress Instructions

Blood Spot Instructions

Blood Spot & Urine Instructions

Cortisol Awakening Response Instructions

Dried Urine & Saliva Testing

Heavy Metals & Essential Elements Instructions

Menstrual Cycle Mapping Instructions

Neurotransmitter Instructions

Saliva & Blood Spot Instructions

Saliva Instructions

Serum Instructions

Sleep Balance Instructions

Urine Hormone Metabolites Instructions

Vitamin D Instructions

Weight Management Instructions

For your convenience, our Customer Service Department can be reached by e-mail at or by phone, Monday through Friday from 6am-5pm PT toll free at 866.600.1636 or locally at 503.466.2445.