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Test Code: TNA Preferred Name Erythrocyte Transketolase

Results Avail After Hours:No

Urgent:N/A

Test Frequency:Weekly

Routine:1 week

MBS Status:Medicare Item

Min. Re-Test Interval:N/A

Public price:

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Test Tubes

Specimen Type	Specimen Volume	Tube Type
Blood	7 mL	Lithium Heparin No Gel 7 mL (Dark Green Top)
EDTA whole blood		EDTA 3 mL whole blood (Lavender top)
EDTA whole blood	3ml	EDTA 3 mL whole blood (Lavender top)

COLLECTION NOTES

Do NOT use gel tubes.
EDTA whole blood is a suitable alternative for this test.
Should be collected before administration of thiamine or other vitamins.

GENERAL NOTES

This test is NO LONGER AVAILABLE. It has been replaced by the red cell Thiamin Diphosphate assay (TDP). See Thiamin Diphosphate Pathtest entry