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Lab Manual for Moffitt-Long and Mount Zion

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Complement, Total, serum

Item Value
Approval req'd? No
Available Stat? No
Test code CH50
Test group Complement, Total
Performed by Immunology
In House Availability Monday, Wednesday (day shift)
Collection Instructions Deliver immediately to lab. Test requires a freshly drawn specimen or serum which has been separated and frozen at -70C within 1/2 hour of collection. Collect a separate tube for this test as the specimen cannot be shared for other tests.
Container type Gold top
Amount to Collect 1 mL blood
Sample type Serum
Preferred volume 0.5 mL serum
UCSF Rejection Criteria Delivered to lab > 15 min after collection; hemolyzed sample
Processing notes Centrifuge, separate serum and freeze at -70C within 1/2 hour of collection.
Units CH50 units/mL
Normal range 22-40 CH50 units/mL
Synonyms CH50; Complement, total hemolytic; Total hemolytic complement
Turn around times 1-5 days
Additional information This test was developed and its performance characteristics determined by the Clinical Laboratories at the Medical Center at UC San Francisco. It has not been cleared or approved by the U.S. Food and Drug Administration.
LOINC code 4532-8
LDT or Mod FDA? Yes
Last Updated 11/27/2012 5:16:48 PM
Entry Number 248
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