Ethical collection
Colostrum is collected within the first milkings — only after every calf has received its share.
Calves firstLaboratory & manufacturing
Proof, published.
From pasture to capsule, every step is measured, certified and made public. This page is where the maison keeps its receipts.
From pasture to capsule
Slow made, fast verified.
Low-heat processing
Gently pasteurised and spray-dried at controlled temperatures to preserve naturally occurring IgG and lactoferrin.
< 60°CStandardisation
Each production run of our colostrum is standardised to 25% immunoglobulin G, verified by HPLC analysis — and every hero active across the maison is standardised the same way.
25% IgGIndependent testing
Every batch is tested by third-party laboratories for heavy metals, microbiology and label accuracy.
Batch CoAMade in the USA
Filled and finished in FDA-registered, GMP-certified facilities in the United States, then sealed with full traceability.
FDA · GMP
GMP
GMP Certified
Manufacturing
FDA
FDA-registered facility
United States
LAB
3rd-party tested
Every batch
US
Made in the USA
American sourcing
GF
Grass-fed
Pasture raised
Batch results
Read our lab reports
Each jar carries a batch number. Each batch number maps to a certificate of analysis published here — identity, IgG concentration, heavy metals, microbiology.
2021
Bovine colostrum supplementation and the composition of gut microbiota
Nutrients — Randomised, double-blind
2019Immunoglobulin content of bovine colostrum across processing methods
Journal of Dairy Science — Comparative analysis
2023Colostrum-derived bioactive peptides: a systematic review
Frontiers in Nutrition — Systematic review
Studies are provided for general information on the ingredient and do not describe effects of Maison Aurô products. Food supplements are not intended to diagnose, treat, cure or prevent any disease.
Quality questions
About our standards
Everything you'd want to know before beginning. Anything missing? Our team answers within one business day.
Who performs your testing?
Independent, accredited third-party laboratories in the United States. We never test only in-house — self-graded homework isn't proof.
What do you test for?
Identity, IgG concentration, heavy metals (lead, mercury, arsenic, cadmium), and full microbiology (salmonella, E. coli, listeria, yeasts and moulds).
Where can I find my batch certificate?
The batch number is printed on the base of your jar. Match it to the certificates listed on this page — or write to us and we'll send it directly.