Factor IX (9) Assay

Test Code:

CG0125

Synonym(s):

Specimen Container

Sodium Citrate Tube

Specimen Requirement

Citrated Whole Blood

Adult: 2 mL

Paediatric and Neonate: 1 ml

- Gently invert the tubes several times to prevent clotting. Clotted specimen is not suitable for testing.

- To collect blood to the designate marking. Over or under filling will compromise the test results.

- When using a winged blood collection set for venipuncture and a coagulation tube is the first tube drawn, draw a discard tube first.

- When obtaining specimens from indwelling lines that may contain heparin, the line should be flushed with 5mL of saline; and the first 5mL of blood or 6-times the line volume (dead space volume of the catheter) be drawn off and discarded before the coagulation tube is filled.

- For those samples collected from a normal saline lock (capped off venous port) twice the dead space volume of the catheter and extension set should be discarded.

Specimen Storage / Transport

Send to laboratory as soon as possible after blood collection. Do not send in ice.

Method

Orderable as STAT?

Urgent tests requiring a shorter turnaround time can be requested by contacting the laboratory haematologist-on-call.

Turn Around Time

5 days

Reference Value(s)

Age Group	Gender	Reference Intervals (%)
Day 0-2	Both	35 - 56
Day 3 - 30	Both	44 - 97
1 Month - 1 Year	Both	43 - 121
1 - 5 Year	Both	44 - 127
6 - 10 Years	Both	48 - 145
11 - 16 Years	Both	64 - 216
Adults (above 16 Years)	Both	59 - 254
Adopted from Royal Children's Hospital, Melbourne, Australia.

Testing Laboratory Location

KKH

Laboratory

Haematology

Contact Number

6394 1373

Day and Time Performed

Wednesday (1300 hrs - 1700Hrs)
Friday (1300 hrs - 1700 hrs)

Orderable on CPOE?

Yes

Downtime Form

63170-Form-1080 Haematology Laboratory Downtime Form

Additional Information

Clot-based Factor IX assay

Change History Notes

Others

Keywords

Factor IX (9) Assay CG0125

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