Complement, Total (CH50)
Label Mnemonic: CH50
Epic Lab Code: LAB154
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
Specimen Instructions:
Allow specimen to clot for 1 hour at room temperature. Sample must be processed and frozen within 2 hours of blood draw.
Collection Medium:
Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.3 mL serum
Rejection Criteria:
Separator tubes. Specimens left to clot at 2-8°C. Specimens exposed to repeated freeze/thaw cycles. Non-frozen specimens. Plasma is not accepted.
Delivery Instructions:
Deliver to laboratory immediately after collection. Critical frozen.
Turn Around Time:
1-2 days upon receipt at reference laboratory
Reference Range:
60-144 CAE Units
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
CPT Code:
See Additional Information:
Specimens Requiring Immediate Delivery