BLOOD SPOT TESTING

Dried blood spot is a form of collection where patients place blood drops on a filter card after a finger prick with a lancet. Once dry, blood spot cards are extremely stable for shipment and storage, and the dried blood format offers excellent correlation with serum tests.

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.

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

No Needles, No Office Visit

ZRT's convenient blood spot collection eliminates blood draw needles, blood draw fees and the need to see a phlebotomist. Patients can collect their sample at home at the time that suits them. 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

Study comparing progesterone supplementation with saliva, blood spot & serum testing

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


 

HORMONE TESTING FOR DIFFERENT SUPPLEMENTATION TYPES

 

Webinar: Unraveling the Confusion

Blood Spot Testing Options
ZRT Laboratory Blood Spot Hormone Test Kit

Blood Spot Test Kit Includes:

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

Hormone Trio – E2, Pg & T

Essential Thyroid Profile – fT3, fT4, TPOab & TSH

Elite Thyroid Profile – T4, Tgbn, fT4, fT3, TPO & TSH

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

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

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

 

ZRT Laboratory Saliva + Blood Hormone Test Kit

Saliva + Blood Spot Test Kit Includes:

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

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

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

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

 

ZRT Laboratory Blood + Urine Hormone Kit

Blood Spot + Dried Urine Test Kit Includes:

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

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

 

ZRT Laboratory Fertility Kit

Fertility Test Kit Includes:

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

 

ZRT Laboratory Weight Management Kit

Weight Management Test Kit Includes:

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 Test Directory & Abbreviations

Dried Blood Spot Reference Ranges

The Science of Dried Blood Spot Testing

FAQs

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