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.

Click on each of our commercial tests listed below for the Test Specifications, including assay method, intra- and inter-assay precision, accuracy, analyte stability and general information.

  • Please inquire about additional tests not listed below.
  • We test a comprehensive range of steroid metabolites in dried urine with creatinine correction.
  • Note that steroid assays in saliva for research purposes can be performed by mass spectrometry.
  • DBS = dried blood spot (capillary blood sampled via finger stick).

 

Analyte Sample Type

Estradiol

Saliva, DBS

Progesterone

Saliva, DBS

Testosterone

Saliva, DBS

DHEA sulfate

Saliva, DBS

Cortisol

Saliva, DBS

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