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General
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Clinical Use:
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HTC is the biologically active form of Vitamin B12. It is thought to be a better marker of low Vitamin B12 stores than total Vitamin B12.
HTC will only be performed as a reflex test where total Vitamin B12 is 250pmol/L or less or if requested by a Haematologist.
HTC is medicare rebateable where total Vitamin B12 is low or indeterminate. |
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Availability:
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Aliases/Synonyms:
| Active B12, HTC, |
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Code:
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Refer to Processing Instructions |
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Handling Instructions (to laboratory):
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Send sample chilled. |
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Hyperlink:
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Reference Interval:
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>35 pmol/L
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Collection Requirements
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Container:
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Serum Sep. Tube-SST (GOLD), |
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Sample Type:
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See container |
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Minimum Collection Volume:
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500uL |
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Collection Instructions:
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Serum samples are required for Vitamin B12 to allow for reflex testing of Active B12 (HTC). |
Processing Requirements
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Alternate Containers:
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Processing Instructions:
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If ONLY HTC is requested, please contact Duty Biochemist and register VB12 and HOLOT if approved.
If a sample other than serum is received, please forward sample to the testing laboratory as Vitamin B12 can still be performed. |
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Minimum Assay Volume:
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200uL |
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Stability:
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7 days chilled |
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Transport Instructions (to testing laboratory):
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Send sample chilled. |
Testing Locations
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Performed at:
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Section
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Department
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Site
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Contact Phone
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| Core |
Biochemistry |
Fiona Stanley Hospital |
6152 8140 |
| Core |
Biochemistry |
QEII Medical Centre |
6383 4093 |
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Last Updated : 06-07-2023 11:43 |