Bb Level
Test Code
BBL
Description
Collect
Plasma from a lavender top (K2 - EDTA) tube is the only acceptable sample type. Mix sample thoroughly. Keep tubes cold on wet ice or with a cold pack after collection.
Patient Prep
Within 30 minutes of venipuncture, centrifuge the collection tube at 1600 (± 200) x g (rcf) at 4°C (± 2°C) for 15 (±) minutes. Transfer the cell-free plasma to a clean tube and immediately store samples at -20°C, or freeze at -60°C or below in an ultra-low freezer.
Preferred Volume: 1 ml
Plasma EDTA Stability:
-20°C - up to 4 weeks
-60°C or below in an ultra low freezer - up to 2 years
Ambient temperature for centrifugation is acceptable provided that the time between collection and storage is minimized (approximately 30 minutes).
Pediatric Collection
Minimum volume: 0.5 ml plasma, frozen.
Unacceptable Conditions
Thawed specimen or specimens stored at room temperature prior to shipment.
Storage Transport Temp
Send frozen plasma Priority Overnight via FedEx and in a well-insulated container on dry ice.
Stability
Plasma EDTA Stability:
-20° C - up to 4 weeks
-60° C or below in an ultra-low freezer - up to 2 years
Notes
Additional testing time may be needed for less than perfect samples or confirmatory testing/reflex testing.
Performed
Methodology
ELISA
Turnaround Time
up to 4 weeks
Department
Complement Lab
Synonyms
Complement (Bb Level), ELISA (Bb Level), Split Product Factor Bb, BBLL
Study Offerings
RUO
CAP/CLIA
Reference Interval
Human Male: 0.41-1.49 mcg/mL
Human Female: 0.41-1.49 mcg/mL
CPT Code
86160
New York Approved
Legacy
FDA
Approved or Cleared