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C1 Esterase Inhibitor Functional, Serum

FC1EQ, C1 Esterase Inh, Func (QN), Functional C1 Esterase, C-1-Esterase Inhibitor Functional Assay, Quantitative

Test Codes

EPIC: LAB1230884, MAYO: C1INF, Beaker: XC1IF

Department

Send Outs

Instructions

It is preferred that the patient fasts for 12-hour prior to specimen collection, but not required.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.

Also acceptable: Serum gel, SST

Critical frozen. Collect and transport specimen on ice.

Physician Office/Draw Specimen Preparation

Critical frozen. Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) immediately.

Preparation for Courier Transport

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.4 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Critical frozen. Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) immediately.

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.4 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Medical Laboratories, Rochester, MN.

Performed

Varies.
Results available in 2-6 days.

Reference Range

By report.

Test Methodology

Enzyme Immunoassay Assay (EIA).

CPT Codes

83520
LOINC:  4477-6

Contacts

Last Updated

10/17/2024