72160-5
LaboratoryHolo-transcobalamin II [Moles/volume] in Serum
Definition
The fraction of vitamin B12 bound to transcobalamin II (TC-II), normally <30% of the total, is considered the "active" fraction available to cells. There have been claims in the literature that measurement of specifically the "active" fraction is an earlier indicator of deficiency, although as of 2011 this claim is reported to be controversial (Am J Clin Nutr. 2011 Jul;94(1):348S-358S. Epub 2011 May 18).
LOINC 6-Axis Classification
Component
Holo-transcobalamin II
Property
SCnc
Time Aspect
Pt
System
Ser
Scale Type
Qn
Method Type
N/A
Details
Class
CHEM
Order/Observation
Both
Short Name
Holo-TC-II Ser-sCnc
Display Name
Holo-transcobalamin II (S) [Moles/Vol]
Related Names
Frequently Asked Questions
What is LOINC code 72160-5?
LOINC code 72160-5 identifies "Holo-transcobalamin II [Moles/volume] in Serum". The fraction of vitamin B12 bound to transcobalamin II (TC-II), normally <30% of the total, is considered the "active" fraction available to cells. There have been claims in the literature that measurement of specifically the "active" fraction is an earlier indicator of deficiency, although as of 2011 this claim is reported to be controversial (Am J Clin Nutr. 2011 Jul;94(1):348S-358S. Epub 2011 May 18).
What does 72160-5 measure?
This code measures Holo-transcobalamin II in Ser. It belongs to the CHEM class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.