Peptide Medix product catalog

Research Catalog · peptide family

RIA Kit Components & Accessories — Research Products

4 catalog items

Catalog # Product Type Species Size Price Add to cart
RK-GAR Goat Anti-Rabbit IgG Serum for RIA Kit Supplies Other species 125 tests $42.00 $50.00
RK-NRS Normal Rabbit Serum for RIA Kit Supplies Other species 125 tests $18.00 $22.00
RK-BUF RIA Buffer (4x Concentrate) Kit Supplies Other species 50 ml $62.00 $73.00
RK-TUBE RIA tubes (12.75mm x 75mm round bottom polypropylene) Kit Supplies Other species 1000 tubes $172.00 $203.00

All items are supplied for in vitro laboratory research use only — not for human or veterinary use, diagnosis or therapy. Prices are per unit as listed; each catalog number ships with its Certificate of Analysis.

RIA Kit Components & Accessories — frequently asked

What are these products?
They are individual components used in radioimmunoassays rather than peptides. The group covers assay buffer, normal rabbit serum, goat anti-rabbit second antibody and assay tubes, sold separately for replenishing kits or assembling custom assays.
Why is normal rabbit serum needed?
Primary antibody is present in trace amounts in a competitive assay. Normal rabbit serum supplies additional carrier immunoglobulin so that the second antibody forms a precipitate large enough to separate bound tracer from free tracer reliably.
What does the second antibody do?
The goat anti-rabbit antibody recognises the rabbit primary antibody and precipitates the resulting immune complexes. This provides the bound-versus-free separation step that must occur before the radioactivity in each fraction is counted.