Complement, total-13316

Test info

  
Complement, total
  
13316
  
LAB13316
  
CH50
  
CH50
Total hemolytic complement
  

Evaluate and follow up SLE (systemic lupus erythematosus) patient's response to therapy; may predict disease flare in SLE; evaluate for complement component deficiency; evaluate complement activity in cases of immune complex disease, glomerulonephritis, rheumatoid arthritis, SBE, cryoglobulinemia. The CH50 assay mainly evaluates the classical pathway.

Specimen

  
Serum
  
  
1.0 mL
  
0.5 mL
  

Immediately following collection, thoroughly mix sample by gently inverting 5 times

  
  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within two (2) hours of sample collection
  3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum
  4. Freeze
  
  
  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), within two (2) hours of sample collection
  4. Freeze
  

Frozen (preferred) - 14 days

Freeze/thaw cycles - stable x 3

Ambient - 2 days

Refrigerated - 2 days

  
  • Specimen not frozen
  • Gross lipemia
  • Plasma specimen

Performance

  
LabCorp Burlington (001941): R-LC
  
Su - Fr
  
2 - 4 days
  

Quantitative liposome lysis by spectrophotometry

Clinical and Interpretive info

  

Age

Male (U/mL)

Female (U/mL)

1 – 30d

Not established

Not established

31d – 6m

> 32

> 20

7m – 17y

> 39

> 39

> 17y

> 41

> 41

Billing

  
86162
  
Result 4532-8

Tracking

  
03/29/2019
  
11/11/2019
  
02/19/2021