Cart Continue shopping “Rheumatoid Factor (RF)” has been added to your cart. Remove item Thumbnail image Product Price Quantity Subtotal Rheumatoid Factor (RF) $20.00 Rheumatoid Factor (RF) quantity $20.00 Update Cart Apply coupon Cart Totals Subtotal $20.00 Shipping Local pickup Shipping to OH. Processing Fee $0.60 Total $20.60 Proceed to Checkout