Complement, Total

Last Modified: 8/31/2023 3:12:40 PM


Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements:

1.0 mL Serum in a SST Gold Top Tube
Collection Instructions:

Avoid Hemolysis

Centrifuge and Separate within 1 hour of collection

Do not Thaw

Do not submit the sample in a glass tube

When ordered with other testing, must be in its own separate tube
Minimum Volume: 0.2 mL
Transport & Storage: Temperature/Stability:

1 month Frozen
Reference Range: CH50: 31 - 66 U/mL

Detection Limit: 10 U/mL
Critical Ranges:  
Test Comments: CH50 values below the reference range may indicate a deficiency in one or more of the components of complement. To obtain more definitive information, abnormal specimens should be assayed for levels of the individual components (C1 to C9).
Methodology: Colorimetric
Clinical Significance: Total Complement (CH50) concentration is an overall measure of the complement system. Decreased concentrations are observed in patients with complement factor deficiencies and disease activity, e.g., systemic lupus erythematosus (SLE) and immune complex disease.
Documentation:  
Custom Panel: No

PRODUCTION SCHEDULE

Turn Around Time: 3 to 6 days
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed: Quest - Chantilly
PHL Test Code: COMPT
EPIC Test Code: LAB154
Send Out Test Code: 618
Alternate Test Names: CH 50
Included Tests:  
CPT Coding: 86162

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