Mamavation independently sent our highest rated probiotic, Seed DS-01 Daily Synbiotic, to an EPA-certified laboratory testing for contaminants such as heavy metals, PFAS “forever chemicals,” and pesticides. After receiving the results, we have good news to report back. You’ve trusted Mamavation to bring you investigations like safest women’s multivitamins, safest children’s multivitamins, & safest probiotics, now join us for the results of our ongoing testing of Seed DS-01.
Disclosure: Mamavation independently paid for laboratory testing to look for potential contamination in this brand. We will now use any affiliate funds we receive from purchases of Seed to pay ourselves back for this testing. This post contains affiliate links. Mamavation receives a small portion of sales. We thank you for your support!

Table of Contents
Mamavation Sent Seed to the Laboratory to Test for Contaminants
Mamavation has been scrutinizing and testing Seed DS-01 since 2018. This year, we were not able to budget much for a comprehensive probiotic investigation with dozens of products, but we did want to make sure we sent the same probiotic from our last probiotic investigation to the laboratory for a series of tests.
So, Mamavation sent the Seed DS-01 to an EPA-certified laboratory for testing for contaminants. We tested for four types of heavy metals: lead, cadmium, arsenic, & mercury. We also tested for indications of PFAS “forever chemicals,” glyphosate, AMPA, and phthalates. The results were very positive.
Lab Results of Seed Daily Synbiotic DS-01
Here are the total results we got from the lab, along with some context we have provided below.
- Indications of PFAS “Forever Chemicals”: non-detect organic fluorine
- 40 PFAS “Forever Chemical” Assays: Non-detect
- Glyphosate: Non-detect
- AMPA (Aminomethylphosphonic Acid): Non-detect (breakdown chemical of glyphosate)
- 300+ Additional Pesticides: Non-detect
- Phthalates: 242 ppb total phthalate (Context: this is lower than the lowest of women’s multivitamins)
- Lead: 0.01 mcg/serving (No prop. 65 warning needed)
- Cadmium: 0.01 mcg/serving (No Prop. 65 warning needed)
- Arsenic: 0.03 mcg/serving (No Prop. 65 warning needed)
- Mercury: Non-detect
Seed DS-01 has been one of the cleanest supplements Mamavation has independently tested. According to the laboratory, no glyphosate, AMPA, 300+ additional pesticides, specific PFAS “forever chemicals,” or organic fluorine (indications of PFAS “forever chemicals”) were detected.
One quick note on phthalates: Mamavation has found phthalates in almost every supplement we have tested, including those we have not yet been able to publish yet. (More supplement consumer studies are coming!) Therefore, we know what lower phthalates look like in the supplement industry right now. We found low levels of phthalates in Seed DS-01. However, note that they were lower than the lowest of women’s multivitamins. Therefore, they would be slotted in our “best” category. We do have one caveat. The only place Mamavation has found non-detect phthalate results in supplements is with some “gummies” and “chews” in children’s multivitamins, but we have not found this to be the case with solid supplements. All solid supplements tested have had phthalate detections thus far. (Including supplements in upcoming consumer studies.) Shining a light on this, with the help of consumers, can only make it better.
The four basic heavy metals our lab tested for were lead, cadmium, arsenic, & mercury. All detections were far below Prop. 65 warning levels. Therefore, Seed DS-01 would not require any warnings regarding heavy metals, according to the State of California, which has the strictest lead restrictions in the country.
Special Offer to Mamavation Community From Seed
Seed is celebrating by offering a special discount to the Mamavation community. Get 30% off your initial month of Seed by using this link. (This is good till March 31st, and after that time will go back to 20%)

More About Seed DS-01 & Bacterial Strains Clinically Tested
The DS-01 is a daily probiotic + prebiotic clinically proven to relieve bloating, gas, and irregularity—plus long-term benefits for immune, skin, and heart health. Seed contains 24 bacterial strains, totaling 53.6 billion AFU. They are tested by Seed for quality, pesticides, and allergens.
These specific bacterial strains, when used together, have been proven in clinical trials to be very beneficial to your gut, immune, skin, and heart health.
DS-01 Bacterial Strains
These are the 24 bacterial strains & species contained in DS-01:
Bifidobacterium longum SD-BB536-JP, Bifidobacterium breve SD-BR3-IT, Lactobacillus plantarum SD-LP1-IT, Lactobacillus rhamnosus SD-LR6-IT, Lactobacillus reuteri SD-LRE2-IT, Bifidobacterium longum HRVD90b-US, Bifidobacterium lactis RD-BS5-IT, Lactobacillus casei HRVD300-US, Bifidobacterium breve HRVD521-US, Bifidobacterium lactis HRVD524-US, Lactobacillus rhamnosus HRVD113-US, Bifidobacterium lactis SD-150-BE, Lactobacillus rhamnosus SD-GG-BE, Lactobacillus reuteri SD-RD830-FR, Bifidobacterium adolescentis SD-BA5-IT, Lactobacillus crispatus SD-LCR01-IT, Lactobacillus fermentum SD-LF8-IT, Lactobacillus plantarum SD-LPLDL-UK, Bifidobacterium lactis SD-MB2409-IT, Lactobacillus salivarius SD-LS1-IT, Bifidobacterium lactis SD-CECT8145-SP, Bifidobacterium longum SD-CECT7347-SP, Lactobacillus casei SD-CECT9104-SP.



Safest Red Light Therapy Devices — Shopping Guide
Please test Dr. Livinggood multivitamin and D3K2
Thanks
Hello. I was wondering if you could test Standard Process Catalyn, which is a multiple vitamin used by many of your subscribers. Thank you.