Factor IX, Activity : ARUP Lab Tests

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Factor IX, Activity : 0030100

Mnemonic: F9

Methodology:	Clotting
Performed:	Mon-Fri
Reported:	1-4 days
Specimen Required:	Collect: One 5 mL lt. blue (sodium citrate). Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for special collection instructions. Storage/Transport Temperature: 2 mL platelet-poor plasma, frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube. Remarks: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. For hemophiliacs: note dose, date, and time of last factor IX concentrate infusion. Unacceptable Conditions: Serum. Nonfrozen or hemolyzed specimens. Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks

Reference Interval: 1-4 days: 15-91% 5-29 days: 15-91% 30-89 days: 21-81% 90-179 days: 21-113% 180-364 days: 36-136% 1-5 years: 47-104% 6 years: 63-89% 7-9 years: 70-133% 10-11 years: 72-149% 12-13 years: 73-152% 14-15 years: 80-161% 16-17 years: 86-176% 18 years and older: 78-184%
CPT Code(s):	85250
Cross References:	Christmas Factor (Plasma Thromboplastin Component (PTC), Antihemophilic Factor B), Intrinsic Factor Proteins, Factor IX

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