K133005 is an FDA 510(k) clearance for the HEMOSIL VON WILLEBRAND ACTIVITY ASSAY. Classified as Test, Qualitative And Quantitative Factor Deficiency (product code GGP), Class II - Special Controls.
Submitted by Instrumentation Laboratory CO (Bedford, US). The FDA issued a Cleared decision on March 13, 2014 after a review of 169 days - an extended review cycle.
This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.7290 - the FDA hematology device framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.
Device pattern: Iterative device modification. Standard predicate reliance. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.