Specimen Collection Manual and Test Catalog
COMPLEMENT C3
Geisinger Epic Procedure Code: LAB2063 Geisinger Epic ID: 14837SPECIMEN COLLECTION
Specimen type:
Plasma or Serum
Preferred collection container:
Specimen required:
2 mL of serum or plasma; minimum 0.2 mL.
Patient preparation:
Fasting specimen preferred.
SPECIMEN PROCESSING
Processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.
Transport temperature:
Refrigerated (preferred). Room temperature or frozen specimen also acceptable.
Specimen stability:
Room temperature: 4 days. Refrigerated: 8 days. Frozen: 8 days.
Rejection criteria:
Stability limits exceeded.
TEST DETAILS
Reference interval:
CPT code(s):
86160 90-180 mg/dL.
Note: The billing party has sole responsibility for CPT coding. Any
questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Complement C3.
Methodology:
Immunoturbidity
Synonyms:
C3
Clinical significance:
Decreased C3 may be associated with acute glomerulonephritis, membranoproliferative glomerulonephritis, immune complex disease, active systemic lupus erythematosus, and generalized autoimmune processes.
Doctoral Director(s):
Review Date:
12/27/2024
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC
Performing Locations