Test Code BLOD0662 Factor IX (9) Assay
Specimen Type/Requirements
Blue top (Sodium Citrate) tube - Double Spun Platelet Poor Plasma
See Coagulation Testing and Platelet Poor Plasma Preparation
This test requires its own separate frozen aliquot. The aliquot tube must be from an appropriately filled 3.2% Sodium Citrate tube to acquire the 9:1 blood to anticoagulant ratio that is critical for valid results.
Platelet poor plasma should be frozen within 2 hours of collection. Double spun (platelet poor plasma) is critical for accurate results.
Patient must not be receiving Heparin or Coumadin Therapy.
Test is affected by moderate hemolysis. Test is not affected by lipemia.
Specimen Volume
Preferred Volume | 1.0 mL |
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Minimum Volume | 0.5 mL |
Stability/Transport
Room Temperature | 2 hours | |
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Refrigerated | 4 hours | |
Frozen | 1 month | Preferred for transport |
Performed Test Frequency
Monday through Friday
Methodology
Activated Partial Thromboplasting Clot-Based Assay
CPT
85250
Performing Lab
Sanford Laboratories Sioux Falls