Initial screening for suspected deficiency in the classical complement pathway.
Collection Instructions
If cells cannot be separated within two hours of draw and frozen, deliver STAT on ice.
Collect
Plain red.
Specimen Preparation
Allow specimen to clot for one hour at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions
Separator tubes. Specimens left to clot at 2-8°C. Specimens exposed to repeated freeze/thaw cycles. Non-frozen specimens. Grossly hemolyzed or severely lipemic specimens.
Stability (from collection to initiation)
After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
Complement CH100, Total (Complement Activity Enzyme Immunoassay, Total)
Total Complement CH100 (Complement Activity Enzyme Immunoassay, Total)
Total Complement CH50 (Complement Activity Enzyme Immunoassay, Total)
CAE
CAE total
CH50
Complement CH100, Total
Total Complement
Total Complement CH100
Total Complement CH50
Total Hemolytic Complement Activity
Reference Interval
Low
38.6 U/mL or less
Normal
38.7-89.9 U/mL
High
90.0 U/mL or greater
CPT Codes
86162
LOINC
4532-8
Order Type (Individual or Group)
I
Result Test ID
CH50
Reportable?
Y
Result Test Name
CH50 COMPLEMENT
Result Type (Individual or Group)
I
Type (Alpha or Numeric)
A
Text
SST NOT ACCEPTABLE;ALLOW SPECIMEN TO CLOT FOR 1HOUR AT ROOM TEMPERATURE; DELIVER STAT ON ICE
CPT Codes
86162
LOINC
4532-8
Pricing
Refer to Lab Account Manager. email: labservicesoutreach@urmc.rochester.edu
Specimen Requirements
Ordering Recommendations
Initial screening for suspected deficiency in the classical complement pathway.
Collection Instructions
If cells cannot be separated within two hours of draw and frozen, deliver STAT on ice.
Collect
Plain red.
Specimen Preparation
Allow specimen to clot for one hour at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions
Separator tubes. Specimens left to clot at 2-8°C. Specimens exposed to repeated freeze/thaw cycles. Non-frozen specimens. Grossly hemolyzed or severely lipemic specimens.
Stability (from collection to initiation)
After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
Laboratories.