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Complement Component C4c

Test Code

353

CPT Code(s)

86160

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.3 mL

Transport Container

Plastic screw-cap vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 90 days

Methodology

Immunoturbidimetric

Performing Laboratory

Quest Diagnostics-Chicago
1355 Mittel Blvd
Wood Dale, IL 60191-1024

Setup Schedule

Set up: Mon-Sat; Report available: 3-4 days

Reference Range(s)

16-47 mg/dL

Clinical Significance

Decreased C4 level is associated with acute systemic lupus erythematosis, glomerulonephritis, immune complex disease, cryoglobulinemia, congenital C4 deficiency and generalized autoimmune disease.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result
Code
Result NameLOINC CodeComponent Name
45009600COMPLEMENT COMPONENT C4C4498-2Complement C4

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.