C3d (add-on only)-US BioTek Kit:
Note: This is a test kit that will be mailed to you. It can be performed using a dried blood spot or a blood draw. Unless we are told otherwise, the dried blood spot will be sent to you. It is your responsibility to arrange for the blood draw for your kit should you choose the blood draw.
Coupon Codes not valid for Add-on testing.
Fasting Required: No
Lab: US BioTek
Specimen: 8 Dried Bloodspots (serum upon request)
Results: Average processing time 7-10 business days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Special Instructions: It is suggested that you maintain your usual dietary habits and consume a variety of foods when possible within a couple weeks prior to blood collection, unless advised otherwise by your healthcare practitioner. Avoid eating foods that may have potentially resulted in a previous adverse reaction and/or anaphylaxis, as secondary exposure may prove fatal. Do not perform this test if you are taking blood thinning medications or if you have a blood clotting disorder unless authorized by your healthcare practitioner.
Immunosuppressive drugs such as oral and intranasal corticosteroids (e.g. prednisone, beclomethasone, fluticasone, triamcinolone) and topical cortisone suspensions and creams, in addition to immune-modulating drugs, may affect test results for antibody assessment.
Dried Blood Spot testing is not recommended for children under the age of 18 months.
Description: C3d is a small protein made when the immune system activates the complement pathway to respond to foreign substances. It stays attached to immune complexes and helps signal when the immune system is reacting to something in the body.
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 Reported:
Coupon Codes not valid for Add-on testing.
Fasting Required: No
Lab: US BioTek
Specimen: 8 Dried Bloodspots (serum upon request)
Results: Average processing time 7-10 business days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Special Instructions: It is suggested that you maintain your usual dietary habits and consume a variety of foods when possible within a couple weeks prior to blood collection, unless advised otherwise by your healthcare practitioner. Avoid eating foods that may have potentially resulted in a previous adverse reaction and/or anaphylaxis, as secondary exposure may prove fatal. Do not perform this test if you are taking blood thinning medications or if you have a blood clotting disorder unless authorized by your healthcare practitioner.
Immunosuppressive drugs such as oral and intranasal corticosteroids (e.g. prednisone, beclomethasone, fluticasone, triamcinolone) and topical cortisone suspensions and creams, in addition to immune-modulating drugs, may affect test results for antibody assessment.
Dried Blood Spot testing is not recommended for children under the age of 18 months.
Description: C3d is a small protein made when the immune system activates the complement pathway to respond to foreign substances. It stays attached to immune complexes and helps signal when the immune system is reacting to something in the body.
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 Reported:
- 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