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Test Code 4391 Factor IX, Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Absorbance measurement, Clot signature formation 

Literature Reference:

HemosIL SynthASil (pn 20006800) package insert issued 02/2016, Instrumentation Laboratory.

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Light-blue top (citrate)

Specimen Volume: Full tube

Specimen Minimum Volume: Full tube

Collection Instructions:

1. Draw a discard tube prior to light-blue top (citrate) tube.
2. Tube should remain stoppered.
3. Do not centrifuge.
4. Clotted blood or an insufficient specimen is not acceptable.
5. Avoid hemolysis and heparin contamination of specimen.

6. Blood should not be drawn through an indwelling catheter or an A-V shunt.

 

Analyte Stability:

4 hours at 18° C to 24° C if the top has not been removed.

2 hours at 18° C to 24° C after the top has been removed.

Platelet-free plasma can be stored 6 months at -70° C


Additional Information: If the patient is a hospital patient and the hematocrit is >55%, call Barnes-Jewish Hematology Laboratory at 314-362-5203 for instructions.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 2 hours after receipt in laboratory
Routine: 4 hours after receipt in laboratory

Reference Values

55%-160%

Literature References:

1. Colman RW, Hirsch J, Marder VJ, Salzman EW. Hemostasis and thrombosis, basic principles and clinical practice. Philadelphia:  J.B. Lippincott Co., 1982.

2. Thompson AR, Harke LA. Manual of hemostasis and thrombosis, Edition 3. Philadelphia:  F.A. Davis Co., 1983.

Test Classification and CPT Coding

85250

Additional Information

For BJH Laboratory Use Only
Analyte Stability:

4 hours at 18° C to 24° C if the top has not been removed.
2 hours at 18° C to 24° C after the top has been removed.
Platelet-free plasma can be stored 6 months at -70° C.

Laboratory Processing Instructions:

Test performed in BJH Hematology.

Specimen Transport Temperature

Ambient/Refrigerate NO/Frozen Yes

Ambient Whole Blood:  4 hours at 18° C to 24° C

Frozen Platelet-Free Plasma: 6 months at -70° C

LOINC Code Information

Name LOINC Code
Factor IX, Plasma 3186-4