C3d Food Sensitivity Add-On
C3d is a stable marker of complement activation linked to IgG 1–3–mediated inflammatory food sensitivity reactions. When paired with IgG, IgG4, and IgA testing, it helps practitioners identify clinically relevant immune responses and prioritize dietary triggers.
- 16 C3d MARKERS
Specimens are tested in duplicate on ELISA platform. We follow a diligent process to extract the key component from each analyte to ensure the antibody present in the patients’ serum will bind to it, and validate with positive and negative controls. The IgG and/or IgA antibodies, once bound to antigen, are detected through spectrophotometric analysis wherein the values are directly proportional to the concentration of the analytes in the sample.
This test can be run on Dried Blood Spot samples.
| C3d | |
| Dried Blood Spot Requirements | 8 Spots |
Instructions can be found near the bottom of the page.
4 Simple Steps to Results
Steps 1
ORDER THE KIT
Collection Kits are free for US BioTek account holders and ship within 1 business day
Steps 2
COLLECT SAMPLE
Kits are designed for the simplest & most hygienic collection process possible
Steps 3
SHIP SAMPLE
Prepaid return shipping labels are included making shipping simple
Steps 4
RECIEVE RESULTS
Results are delivered to the provider portal with industry leading turnaround times.
16 C3d Markers
- Cow's Milk
- Whey
- Green Bean
- Kidney Bean
- Peanut
- Walnut
- Chicken Egg White
- Chicken Egg Yolk
- Duck Egg Whole
- Aspergillus fumigatus
- Baker's / Brewer's Yeast
- Honey
- Candida Albicans
- Beef - Not included on Vegetarian Panels
- Crab - Not included on Vegetarian Panels
- Oyster - Not included on Vegetarian Panels
Markers Tested
16 C3d Markers
- Cow's Milk
- Whey
- Green Bean
- Kidney Bean
- Peanut
- Walnut
- Chicken Egg White
- Chicken Egg Yolk
- Duck Egg Whole
- Aspergillus fumigatus
- Baker's / Brewer's Yeast
- Honey
- Candida Albicans
- Beef - Not included on Vegetarian Panels
- Crab - Not included on Vegetarian Panels
- Oyster - Not included on Vegetarian Panels
VeriTek Process
AUTOMATED SYSTEMS
SUPERIOR ASSAY PREPARATION
DUPLICATE TESTING
EXTERNAL ACCOUNTABILITY
Need Assistance With
Specimen Collection?
Accurate results start with proper specimen collections. Watch the video or download detailed instructions to walk you through the collection process.











