Rheumatoid Factor (RF) Concentrate - > 25 kIU/mL

Product Name	Rheumatoid Factor Concentrate
Source	Human Plasma
Catalogue Number	508-27
Form	Liquid
Purity	Purified
Activity	> 25,000 IU/mL (Abcam anti-Rheumatoid Factor IgM ELISA)
Assay Standard	Non WHO Reference Material, Rheumatoid Arthritis Serum, 1st British Standard, NIBSC code: 64/002
Protein	Reported in mg/mL (Biuret)
Specific Activity	Report in IU/mg protein
Appearance	Yellow to orange, clear to hazy liquid
Formulation	Solution in 20 mM sodium phosphate, 0.5 M sodium chloride, 0.02% Proclin 300, pH 7.2.
Features	- Highly concentrated for minimum volume additions for control/calibrator manufacturing versus plasma or serum, saving money on other material components - Native-sourced, mimicking elevated RF human donor samples during assay interference studies - Ideal for spike-interference studies in assay development and validation - Available in large batch sizes to minimize lot-to-lot variability
Related Products	508-10 - Rheumatoid Factor Concentrate from human plasma 991-24-S-RA - Rheumatoid Factor serum samples from human patients 124-09 - Antistreptolysin from human plasma
Storage	2-8°C
Recertification	1 year
Synonyms	RF, RF Concentrate
Infectious Disease Testing	Negative or non-reactive at the donor level for anti-HIV 1 and 2, anti-HCV and HBsAg by FDA approved methods.