Please note that MHRA/NIBSC will not prepare a replacement for this product once stocks of the current batch are exhausted. A WHO IS for CRP will therefore no longer be available after this time. In the absence of a WHO IS, ERM-DA474_IFCC is available from the Joint Research Centre, and is traceable to 85/506. Sales restriction of five ampoules per customer per year is in place for this product, to help ensure that our remaining stock lasts for as long as possible and reaches as many unique end users as possible. However, we may allow sale of larger quantities of the product if sufficient justification can be provided.