C1Q Binding Assay C1QB
Method(s) | Semi Quantitative Enzyme Linked Immunosorbent Assay |
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Specimen Required | |
Collect | One 6 mL plain red or gold (SST) top tubes. |
Transport | 1 mL serum, frozen. (Min: 0.3 mL) |
Remarks | CRITICAL FROZEN. Allow complete clotting of red blood cells (up to 1 hour), then separate serum from cells within 30 minutes and freeze immediately (Min: 0.3 mL). If ordered in conjunction with a Circulating Immune Complex, C3 fragments, transfer TWO 1 mL aliquots of serum for testing. |
Stability | (collection to initiation of testing) After separation from cells: Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks (avoid repeated freeze/thaw cycles) |
Unacceptable Conditions | Nonfrozen samples. |
Schedule | Mon, Thu, Sat |
Billing Code | 5011014 |
CPTCode | 86332 |
Preferred Specimen Collection Device(s) | |
Reference Interval | |
Less than or equal to 3.9 ug Eq/mL is considered negative for circulating complement binding immune complexes. |