Biomarker Lens

Biomarkers · Chemical

Complement, Total (CH50)

Primary unit
U/mL
LOINC codes
4532-8
Tests that measure Complement, Total (CH50)
Quest Diagnostics 3, Labcorp 2

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Labcorp, Complement, Total (CH50) 001941

AgeMale (U/mL)Female (U/mL)
1 to 30 dNot establishedNot established
31 d to 6 m>32>20
7 m to17 y>39>39
>17 y>41>41

Labcorp test catalog, 001941

Tests

Check the catalog code, specimen, method and preparation for every test that measures Complement, Total (CH50). Select up to five tests to compare them side by side.

Quest Diagnostics 3 tests

Single-analyte tests

  • Complement, Total (CH50) 618

    Serum · Fasting not stated · Turnaround Set up: Sun, Mon Wed-Fri; Report available: 3-4 days

    Method and collection
    Method
    Liposome
    Collection
    Draw sample without anticoagulant. Allow to clot. Separate serum into a plastic tube and freeze sample within one hour of time drawn. With mutiple tests, submit a separate tube for each test. Do not submit the sample in a glass tube.
    Reference notes
    31-60 U/mL
    Quest Diagnostics catalog page

Panels that include this biomarker

  • Complement Component C3, C4, CH50 37859

    3 analytes · Serum · Fasting not stated

    Method and collection
    Method
    Immunoturbidimetric • Liposome
    Preparation
    Overnight fasting is preferred
    Collection
    Draw sample without anticoagulant, allow to clot. Split serum into two transport tubes and freeze both samples within 1 hour of time drawn.
    Reference notes
    See individual tests
    Quest Diagnostics catalog page

  • Lupus Panel 3 with ANA, IFA with Reflex to Titer and Pattern 19881

    9 analytes · Serum · Fasting not stated

    Method and collection
    Method
    See individual tests
    Reference notes
    See Laboratory Report
    Quest Diagnostics catalog page

Labcorp 2 tests

Single-analyte tests

  • Complement, Total (CH50) 001941

    Serum · Fasting not stated · Turnaround 2 - 4 days

    Method and collection
    Method
    Quantitative liposome lysis by spectrophotometry
    Collection
    Allow specimen to clot at room temperature for 15 to 30 minutes. Remove serum after centrifugation, place in plastic transport tube and freeze. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
    Labcorp catalog page

Panels that include this biomarker

  • COVID-19 Induced Thrombotic Microangiopathy Profile 164044

    6 analytes · Serum · Fasting not stated · Turnaround 2 - 4 days

    Method and collection
    Method
    See individual test components.
    Collection
    Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood to anticoagulant ratio. The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples. When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternate anticoagulant should be collected after the blue-top tube. Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes. Centrifuge and carefully remove the plasma using a plastic transfer pipette, being careful not to disturb the cells. Transfer the plasma into a Labcorp PP transpak frozen purple tube with screw cap (Labcorp No. 49482). Freeze plasma within four hours of blood collection and maintain frozen until tested. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit seperate frozen specimens for each test requested.
    Labcorp catalog page

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Sources

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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