Factor IX, Inhibitor F9IN
|Collect||Two 3 mL light blue (sodium citrate) top tube.|
|Transport||**TIME SENSITIVE** Specimens that cannot be shipped to the laboratory to arrive within 2 hours of collection must have platelet-poor plasma aliquoted and sent frozen to the laboratory.|
|Unacceptable Conditions||Room temperature specimens|
|Schedule||Performed once a week.|
|Notes||Testing cannot be performed if Factor IX level is greater than 3 U/dL.|
|Preferred Specimen Collection Device(s)|
Less than 0.6 Bethesda units.