48494-9
LaboratoryComplement C1 esterase inhibitor actual/normal in Serum or Plasma
Definition
Functional C1 esterase inhibitor is reported as % means "percent of functional over mean normal" by many commonly used kits. This is reported by LOINC code 48494-9. Many sites have incorrectly mapped to [LOINC: 10634-4] (functional /Total) which is not the component reported by the commonly used methods.
LOINC 6-Axis Classification
Component
Complement C1 esterase inhibitor actual/Normal
Property
RelCCnc
Time Aspect
Pt
System
Ser/Plas
Scale Type
Qn
Method Type
N/A
Details
Class
HEM/BC
Order/Observation
Both
Short Name
C1INH Act/Nor SerPl
Display Name
Complement C1 esterase inhibitor actual/normal [Rel catalytic activity/Vol]
Related Names
Frequently Asked Questions
What is LOINC code 48494-9?
LOINC code 48494-9 identifies "Complement C1 esterase inhibitor actual/normal in Serum or Plasma". Functional C1 esterase inhibitor is reported as % means "percent of functional over mean normal" by many commonly used kits. This is reported by LOINC code 48494-9. Many sites have incorrectly mapped to [LOINC: 10634-4] (functional /Total) which is not the component reported by the commonly used methods.
What does 48494-9 measure?
This code measures Complement C1 esterase inhibitor actual/Normal in Ser/Plas. It belongs to the HEM/BC 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.