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Test Code LAB2860 C1 Function

Important Note

Must be processed and frozen within 60 minutes of collection.

Additional Codes

C1 Function

Clinical System Name

C1 Function


Complement C1 Function

Sample Requirements

Specimen: Whole Blood

Container(s): Red

Preferred Vol: 1.0 mL

Minimum Vol: 0.5 mL


Note: Gel separator is not acceptable. Send to the Lab immediately after collection.

Processing Instructions

Reject due to: Gel separator is not acceptable. Thawed specimen.

Spin: Y

Aliquot: Y

Temp: -70 C

Storage location: Spin blood immediately, transfer 0.5 mL serum to a plastic tube affixed with large Cerner label. Deliver specimen to the freezer Send Outs rack. Plasma should be frozen within 1 hour of blood draw.


Off-site collection: Spin blood immediately. Serum should be frozen within 1 hour of blood draw.


Specimen Type Temperature Time
Serum Room Temp Unacceptable
  Refrigerated N
  Frozen  1 yr



STAT Performed TAT
N 1st Thursday of the Month 4 - 5 w


Performing Laboratory

National Jewish Health

Complement Laboratory

1400 Jackson Street, Room D411

Denver, CO 80206


Phone Number: (800) 550-6227


Department: Send Outs

Phone Number: (206) 987-2563

CPT Codes



Method: Hemolytic Assay

Analytical Volume: 0.25 mL Serum


Reference Range

116,373 - 264.072 Units/mL

Send Out Instructions

Reference Test Name: C1 Function
Reference Lab Test Code: C1F
Instructions: Send out Monday through Thursday via FedEx Priority Overnight. Saturday deliveries are not accepted.