DRIED BLOOD SPOT TESTING

ZRT developed the science for accurately measuring hormones in dried blood spot and is currently the only lab to offer this method commercially.

Why measure in blood spot? Blood spot is ideal for measuring hormones and other analytes such as insulin, blood lipids, Vitamin D, thyroid hormones, and elements like lead and magnesium. It offers distinct advantages over serum because it eliminates the need for a blood draw – saving patients time and money.

 

Best Blood Test for Topical Hormones

Blood spot is more accurate than serum for tracking topical hormone supplementation

No Needles, No Office Visit

ZRT's convenient at-home blood spot collection requires only a quick finger pierce with a lancet and a series of blood drops on a collection card – no blood draw needles and no trip to the phlebotomist. Research also shows that blood spot is more accurate than serum for measuring blood hormone levels in patients supplementing topically.

Review our Testing & Supplementing Guide

Read the Topical Supplementation Study

Unlike other labs, patients do not need to stop hormone supplementation to use ZRT’s testing because we have ranges adjusted for age, menstrual status and supplementation types. This is the ideal method for tracking the effectiveness of hormone treatments.

Learn More About Blood Spot Testing


 

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See the Profiles
Hormone Profiles

Female Blood Profile I – E2, Pg, T, DS, C & SHBG

Female Blood Profile II – E2, Pg, T, DS, C, SHBG, TSH, fT3, fT4 & TPOab (Sample Report)

Male Blood Profile I – E2, T, DS, C, SHBG & PSA

Male Blood Profile II – E2, T, DS, C, SHBG, PSA, TSH, fT3, fT4 & TPOab (Sample Report)

Female Combo Profile I – E2, Pg, T, DS, Cx4 (saliva); TSH, fT3, fT4, TPOab (blood spot) (Sample Report)

Female Como Profile II – Cx4 (saliva); E2, Pg, T, SHBG, DS, TSH, fT3, fT4, TPOab (blood spot) (Sample Report)

Male Combo Profile I – E2, T, DS, Cx4 (saliva); PSA, TSH, fT3, fT4, TPOab (blood spot) (Sample Report)

Male Combo Profile II – Cx4 (saliva); E2, T, DS, SHBG, PSA, TSH, fT3, fT4, TPOab (blood spot) (Sample Report)

Thyroid & Elements Profiles

Essential Thyroid Profile – fT3, fT4, TPOab & TSH (Sample Report)

Elements Profile – Dried Blood Spot - Hg, Cd, Pb, Zn, Cu, Se & Mg (Sample Report)

Comprehensive Thyroid Profile – fT3, fT4, TPOab & TSH (blood spot); I, Br, Se, As, Cd & Hg (dried urine) (Sample Report)

Comprehensive Elements Profile – Hg, Cd, Pb, Zn, Cu, Se & Mg (blood spot); I, Br, Se, As, Cd & Hg (dried urine) (Sample Report)

Specialty Profiles

CardioMetabolic Profile – Insulin, hsCRP, HbA1c, TG, CH, LDL, HDL, VLDL (Sample Report)

Vitamin D Profile – 25-OH, Total (D2, D3)

Fertility Profile – Cx4 (saliva); E2, Pg, T, DS, SHBG, TSH, fT3, fT4, TPOab, LH, FSH (blood spot) (Sample Report)

Skin Vitality Profile – E2, E3, Pg, T, DS, Cx4 (saliva); TSH, Vitamin D (blood spot) (Sample Report)

Weight Management Profile – E2, Pg, T, DS, Cx4 (saliva); TSH, Insulin, HbA1c, Vitamin D (blood spot) (Sample Report)

  • Thyroid add-ons – fT3, fT4, TPOab
  • Cardio add-ons – hsCRP, TG, CH, LDL, HDL, VLDL
Reference Information

ZRT Overview of Profiles

ZRT Test Directory & Abbreviations

FAQs

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