Test ID: C2
C2 Complement, Functional, with Reflex, Serum
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
81835
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Yes
Useful For Suggests clinical disorders or settings where the test may be helpful
The investigation of a patient with a low (absent) hemolytic complement (CH[50]).
Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| C4 | Complement C4, S | Yes | No |
| C3 | Complement C3, S | Yes | No |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
If the C2 result is <15 U/mL, then C3 and C4 will be performed at an additional charge.
Method Name A short description of the method used to perform the test
C2/81835: C2H(50) Automated Liposome Lysis Assay
C3/8174, C4/8171: Nephelometry
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
C2 Complement,Functional,w/Reflex,S
Aliases Lists additional common names for a test, as an aid in searching
C2 Functional
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