Complement C4a Build info

Synonyms

• COMPLEMENT C4A
• LAB11177

Short Name

COMPLEMENT C4A

Procedure Master Number

LAB11177

Procedure ID

114734

Clinical Info

Futhan preservative must be added to samples immediately after collection.

Specimen Sources

Specimen Types

Container

Futhan Collection Kit

Collection Instructions

MUST USE FUTHAN COLLECTION KIT
Container/Tube; Lavender Top Tube
Specimen: 1 mL Plasma, EDTA with Futhan preservative
Transport Temperature: Frozen
Collection
Collect EDTA whole blood sample into a chilled lavender-top tube. Immediately add Futhan preservative as directed in the Futhan collection kit (LabCorp N° 78946). Recap lavender tube and invert several times to mix well. Centrifuge the whole blood specimen to separate the plasma. Transfer the plasma into the plastic screw-cap tube that is included in the collection kit. The specimen must be submitted in this transfer tube, which is labeled with the words "Futhan Added." Freeze immediately and maintain frozen until tested.
Patient Preparation
No radioactive isotopes administered within 48 hours prior to venipuncture.

Samples that are not properly collected and stored will produce erroneously elevated results due to in vitro activation. Blood must be drawn directly into tubes containing EDTA at a final concentration of at least 10 mM with the addition of nafamostat mesilate (Futhan, FUT-1750) to further reduce in vitro complement activation.

Transport Instructions

Specimen Stability

6 Hours Room Temperature
5 Days Refrigerated
14 Days Frozen

Methodology

Radioimmunoassay (RIA)

Days Performed

TAT: 5 - 8 Days

Performing Laboratory

LabCorp

CPT

86160
LOINC Code 4501-3

PDM

Only Orderable at Locations:

Results

Forms