PolyHRP had been synthesized first time in Russia in 1987. First commercial product emerged in the West was Streptavidin-PolyHRP20. It was initially purchased from SDT by Belgian firm Sotramo International NV and quickly incorporated into Janssen Biochimica Catalogue under the name Streptavidin-(HRP)18-20 in 1991.

After splitting biochemical business of Janssen, PolyHRP became an item sold through former Janssen distributors and customers (RDI, Accurate Chemical & Scientific Corp., CLB / Sanquin Reagents / Essange Reagents).

After Fitzgerald Industries International (part of Trinity Biotech) acquired the business of Research Diagnostics (RDI) in 2005 it has become an active distributor of our products and services (primarily custom PolyHRP conjugations) in the United States and worldwide -

Fitzgerald Industries International
Suite 1A North, 30 Sudbury Road
Acton, MA
01720 USA
Phone: 1.978.371.6446
Fax: 1.978.371.2266
USA Toll Free: 1.800.370.2222
E-mail: antibodies@fitzgerald-fii.com
Website: www.fitzgerald-fii.com

Currently our products and services are available in the United States and worldwide through Biosynth AG who acquired Fitzgerald Industries as Life Sciences supply business from Trinity Biotech plc. in 2023 -

Biosynth International Inc.
2001 Production Dr. Unit 1-3
Louisville, KY 40299

+1 (888)-681-2933 (toll-free)
+1 (858)-779-9911


Biosynth International, Inc
65 Zub Lane | 01440 Gardner | MA | United States

US Purchasing us.purchasing@biosynth.com


Biosynth Limited

4-9 Old Station Business Park
RG20 6NE
United Kingdom
Tel: +44 1635 578444
Fax: +44 1635 579444

Purchases UK uk.purchasing@biosynth.com

Biosynth s.r.o.

Nobelova 34 (located in the Istrochem area)
P.O. Box 29
836 05 Bratislava
Tel: +421 (0)22 102 56 99

Funakoshi Co. Ltd is an exclusive distributor of our reagents in Japan:

Funakoshi Co. Ltd
9-7 Hongo 2-chome, Bunkyo-ku, Tokyo, 113-0033, Japan
TEL: 81-3-5684-1620
FAX: 81-3-5684-1775
E-mail: reagent@funakoshi.co.jp
Website: www.funakoshi.co.jp

In China (mainland) our products and services are available through

Yarewell Biotechnology Ltd.
Professional supplier of IVD raw materials
Room 103A, Block A, Huashengda Building, No 22, Bagua 4th Road,
Futian District, Shenzhen, Guangdong, China,518000

Tel: 0755-82077000-809 Fax: 0755-82077420

E- mail: purchasing02@yarewell.com QQ:3002094584


who has recently been assigned to be a non-exclusive distributor of SDT products and services in PRC.

Streptavidin-PolyHRP20, 40 & 80 are being offered by several other large VAR/OEM customers and their distributors under different generic names, with no indication of specific HRP polymerization grade. A number of Life Science Research and IVD manufacturers and immunoassay test kit assemblers incorporate our Streptavidin-PolyHRP conjugates in many commercial Ultra-Sensitive and High Sensitivity ELISA and ELISPOT test kits (mainly for cytokines) and e.g. HIV 4G test kits (donor blood screening), frequently (if not typically) with no disclosure of polymeric nature of "Streptavidin-HRP" conjugate used in the kit.

For details on how to place a purchase order directly with SDT please refer to the General Ordering Information section.