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.
Blood spot is ideal for measuring hormones and other analytes such as insulin, blood lipids, Vitamin D, thyroid hormones, and elements like 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.
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.
Webinar: Unraveling the Confusion
Blood Spot Test Kit Includes:
B-220 | Thyroids
TSH, FT3, FT4, TPOab, Tgbn, TT4
B-221 | Lipids
HDL, TG, CH
B-222 | CardioMetabolic
IN, HbA1c, HDL, TG, CH, hsCRP
B-223 | LCMS Vitamin D
D2, D3
B-224 | ICPMS Toxic and Essential Elements
Zn, Cu, Mg, Se, Cd, Hg
B-240 | LCMS Hormones 3 with SHBG
E2, Pg, T, SHBG
B-241 | LCMS Hormones 5 with SHBG
E2, Pg, T, DS, SHBG
B-242 | LCMS Hormones 7 with SHBG
E2, E3, E1, Pg, T, DS, C, SHBG
B-243 | LCMS Hormones 7 with SHBG and Thyroids
E2, E3, E1, Pg, T, DS, C, SHBG, TSH, FT3, FT4, TPOab, Tgbn, TT4
B-204 | Luteinizing Hormone and Follicle-Stimulating Hormone: LH, FSH
B-201 | Sex Hormone Binding Globulin: SHBG
B-202 | Prostate-Specific Antigen: PSA
B-203 | Thyroid-Stimulating Hormone: TSH
B-207 | Insulin: IN
B-206 | High-Sensitivity C-Reactive Protein: hsCRP
B-208 | Hemoglobin A1c: HbA1c
B-205 | Anti-Müllerian Hormone: AMH
Saliva + Blood Spot Test Kit Includes:
SB-640 | Saliva 4-Point Cortisol + Blood Spot Thyroids
Saliva: C(x4)
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
SB-641 | Saliva 4-Point Cortisol + Blood Spot CardioMetabolic
Saliva: C(x4)
Blood Spot: IN, HbA1c, HDL, TG, CH, hsCRP
SB-642 | Saliva 4-Point Cortisol + Blood Spot Thyroids and CardioMetabolic
Saliva: C(x4)
Blood Spot: TSH, FT3, FT4, TPOab, IN, Tgbn, HbA1c, HDL, TG, CH, hsCRP, TT4
SB-643 | Saliva 4-Point Cortisol + Blood Spot LCMS Hormones 7 with SHBG
Saliva: C(x4)
Blood Spot: E2, E3, E1, Pg, T, DS, C, SHBG
SB-644 | Saliva 4-Point Cortisol + Blood Spot LCMS Hormones 7 with SHBG and Thyroids
Saliva: C(x4)
Blood Spot: E2, E3, E1, Pg, T, DS, C, SHBG, TSH, FT3, FT4, TPOab, Tgbn, TT4
SB-645 | Saliva 4-Point Cortisol + Blood Spot LCMS Hormones 7 with SHBG and CardioMetabolic
Saliva: C(x4)
Blood Spot: E2, E3, E1, Pg, T, DS, C, SHBG, IN, HbA1c, HDL, TG, CH, hsCRP
SB-646 | Saliva 4-Point Cortisol + Blood Spot LCMS Hormones 7 with SHBG, Thyroids and CardioMetabolic
Saliva: C(x4)
Blood Spot: E2, E3, E1, Pg, T, DS, C, SHBG, TSH, FT3, FT4, TPOab, IN, Tgbn, HbA1c, HDL, TG, CH, hsCRP, TT4
SB-647 | Saliva LCMS Hormones 7 + Blood Spot Thyroids
Saliva: E2, E3, E1, Pg, T, DS, C
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
SB-648 | Saliva LCMS Hormones 7 + Blood Spot CardioMetabolic
Saliva: E2, E3, E1, Pg, T, DS, C
Blood Spot: IN, HbA1c, HDL, TG, CH, hsCRP
SB-649 | Saliva LCMS Hormones 7 + Blood Spot Thyroids and CardioMetabolic
Saliva: E2, E3, E1, Pg, T, DS, C
Blood Spot: TSH, FT3, FT4, TPOab, IN, Tgbn, HbA1c, HDL, TG, CH, hsCRP, TT4
SB-650 | Saliva LCMS Hormones 7 with 4-Point Cortisol + Blood Spot Thyroids
Saliva: E2, E3, E1, Pg, T, DS, C(x4)
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
SB-651 | Saliva LCMS Hormones 7 with 4-Point Cortisol + Blood Spot CardioMetabolic
Saliva: E2, E3, E1, Pg, T, DS, C(x4)
Blood Spot: IN, HbA1c, HDL, TG, CH, hsCRP
SB-652 | Saliva LCMS Hormones 7 with 4-Point Cortisol + Blood Spot Thyroids and CardioMetabolic
Saliva: E2, E3, E1, Pg, T, DS, C(x4)
Blood Spot: TSH, FT3, FT4, TPOab, IN, Tgbn, HbA1c, HDL, TG, CH, hsCRP, TT4
SB-653 | Saliva LCMS Hormones 7 with 4-Point Cortisol + Blood Spot Thyroids, CardioMetabolic, and LCMS Vitamin D
Saliva: E2, E3, E1, Pg, T, DS, C(x4)
Blood Spot: TSH, FT3, FT4, TPOab, D2, D3, IN, Tgbn, HbA1c, HDL, TG, CH, hsCRP, TT4
Blood Spot + Dried Urine Test Kit Includes:
U-326 | ICPMS Iodine
I, Crtn
U-327 | ICPMS Toxic and Essential Elements
I, Br, Se, Li, As, Cd, Hg, Crtn
BU-744 | Blood Spot Thyroids + Dried Urine ICPMS Iodine
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: I, Crtn
BU-745 | Blood Spot Thyroids + Dried Urine ICPMS Toxic and Essential Elements
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: I, Br, Se, Li, As, Cd, Hg, Crtn
BU-740 | Blood Spot Thyroids + Dried Urine GCMS Estrogen Hormone Metabolites
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: E2, E1, E3, 2-OH E2, 2-OH E1, 4-OH E2, 4-OH E1, 16aOH E1, 2-MeO E2, 2-MeO E1, 4-MeO E2, 4-MeO E1, BPA, Crtn
BU-741 | Blood Spot Thyroids + Dried Urine GCMS Estrogen Hormone Metabolites and LCMS Diurnal Hormones I
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: E2, E1, E3, 2-OH E2, 2-OH E1, 4-OH E2, 4-OH E1, 16aOH E1, 2-MeO E2, 2-MeO E1, 4-MeO E2, 4-MeO E1, BPA, Crtn(x5), FC(x4), FCn(x4), MT6s(x4)
BU-742 | Blood Spot Thyroids + Dried Urine GCMS Hormone Metabolites
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: E2, E1, E3, 2-OH E2, 2-OH E1, 4-OH E2, 4-OH E1, 16aOH E1, 2-MeO E2, 2-MeO E1, 4-MeO E2, 4-MeO E1, BPA, Pgdiol, AlloP, AlloPd, 3aHP, 20aHP, DOC, Ccn, TC, TCn, ThC, ThCn, D, Adione, Andro, Etio, T, Epi-T, 5a-DHT, 5a3a, Crtn
BU-743 | Blood Spot Thyroids + Dried Urine GCMS Hormone Metabolites and LCMS Diurnal Hormones I
Blood Spot: TSH, FT3, FT4, TPOab, Tgbn, TT4
Dried Urine: E2, E1, E3, 2-OH E2, 2-OH E1, 4-OH E2, 4-OH E1, 16aOH E1, 2-MeO E2, 2-MeO E1, 4-MeO E2, 4-MeO E1, BPA, Pgdiol, AlloP, AlloPd, 3aHP, 20aHP, DOC, Ccn, TC, TCn, ThC, ThCn, D, Adione, Andro, Etio, T, Epi-T, 5a-DHT, 5a3a, Crtn(x5), FC(x4), FCn(x4), MT6s(x4)
BU-746 | Blood Spot + Dried Urine ICPMS Toxic and Essential Elements
Blood Spot: Zn, Cu, Mg, Se, Cd, Hg
Dried Urine: I, Br, Se, Li, As, Cd, Hg, Crtn
ZRT Test Directory & Abbreviations
Dried Blood Spot Reference Ranges
LCMS Dried Blood Spot Reference Ranges
The Science of Dried Blood Spot Testing
