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Lab Test Dictionary

Chromogenic Factor IX Activity Assay, Plasma (CH9)




Factor 9; Factor IX (rFIXFc); Alprolix; Idelvion; Coagulation Factor IX (Recombinant), Fc Fusion Protein; Coagulation Factor IX (Recombinant), Albumin Fusion Protein; Coagulation Factor IX (Recombinant), glycoPEGylated; Extended Half-life

Specimen Type


Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

1-3 Days

Collection Information

Specimen Required

(one) 1.8 mL or (one) 2.7 mL Blood

Container Type

Light Blue (Sodium Citrate)

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 14 Days

Test Volume Required

1 mL Platelet-Poor Plasma

Minimum Test Volume

0.5 mL Platelet-Poor Plasma

Processing Instructions

Separate plasma and freeze immediately within 4 hours of collection. Order in Mayolink and send with Mayo courier Monday-Friday.

CPT Codes