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HelpTest Code LAB769 C1 Esterase Inhibitor, Functional
Additional Codes
C1ESTER FN
Clinical System Name
C1 Esterase Inhibitor, Functional
Synonyms
C1 Esterase Inhibitor Functional Assay
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST or Red or Gold Microtainer
Preferred Vol: 2.0 mL
Minimum Vol: 1.2 mL
Note: Send to the Lab STAT. Serum must be frozen within one hour of collection.
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: -70 C
Storage location: Serum must be frozen within 1 hour of blood draw. Spin blood, freeze 0.5 mL serum in a plastic tube affixed with a large computer label. Freeze in the -70° C freezer send-outs rack. Store remaining labels in the clear plastic box on the CPA fridge.
Off-site collection: Spin, aliquot & freeze serum within one hour of blood draw. Transport frozen.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room temp | N | |
| Refrigerated | N | |
| Frozen | 2 w |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Collected daily; set up Th | 2 - 8 d |
Performing Laboratory
University of Washington
Dept of Laboratory Medicine
1959 NE Pacific St, NW220
Seattle, WA 98195
Phone Number: (206) 520-4600
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
86161
Methodology
Method: None ELISA
Analytical Volume: None specified
Limitations:
Reference Range
| Decreased Function | <41% |
| Normal Function | >68% |
| Equivocal | 41 - 68% |
Send Out Instructions
| Reference Test Name: | C1 Esterase Inhibitor Functional Assay |
| Reference Test Number: | C1EF |
| Instructions: | Send out M - F with the UW courier. |