Complement C3 & C4 (Blood)

Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Immunology

Delphic Registration Code (Alpha Code)

COMP

Test Code (Numeric Code)

7221

Laboratory Handling

Phlebotomy

Serum / Plasma

Transport

Ambient

Registration

Alpha Code: C3, Numeric Code: 7223. Alpha Code: C4, Numeric Code: 7224

Laboratory

LabPlus Automation

Sample Stability

C3 = 4 days at 20-25°C, 8 days at 4-8°C, 8 days at -20°C, C4 = 2 days at 20-25°C , 8 days at 4-8°C, 3 months at -20°C

Synonyms

C3
C4

Turnaround Time

1 day

Specimen Type

• Plasma
• Serum

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin PST- Gel (Light Green Cap)

Acceptable

• Lithium Heparin - Non-gel (Green Cap)
• Lithium Heparin PST- Gel (Light Green Cap)
• Plain (Red Top)
• SST II (Gold Cap)

Preferred Sample Volume (ml)

4.5

Minimum Sample Volume (ml)

3

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Heparin (Microtainer)

Acceptable

• Heparin (Microtainer)
• Plain(Microtainer)
• SST(Microtainer)

Preferred Sample Volume (ml)

1

Minimum Sample Volume (ml)

0.5

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

3

Transport to Lab

Chilled (2 - 8 degrees Celsius)

Additional Referral/Aliquot Information

If the delay between taking the specimen and arrival in the testing laboratory is going to be greater than 2 days, the sample is required to be stored at -20 o C immediately after collection and transported frozen to the laboratory. Heparin samples need to be spun and the plasma separated prior to freezing.

Test Method

Turbidimetry on Roche Cobas

Uncertainty of Measurement

This information is available upon request

Contact Information