Verified
“USDA Organic.”
USDA Organic seal on the panel, certified by Organic Certifiers.
Micro Ingredients Organic Spirulina Powder, 1 lb Review
SAC StudioBest Value Organic PowderCONSIDER
8.2/10SAC Product Score™
How the score breaks downHide breakdown
SAC Product Score™ — how it breaks down
- Dose vs Clinical Range25%9.2
- Purity & Contaminant Control25%6.5
- Label Transparency20%8.0
- Certifications & Sourcing15%8.4
- Value15%9.6
The value pick, with a lead warning you should read before buying
✓ Buy if…
- You want the cheapest organic 3 g dose available
- You want chlorophyll and protein disclosed on the panel
✗ Skip if…
- You want to avoid any printed heavy-metal warning
- You are pregnant or buying for children
Read the full analysis
✓ Also buy if…
- You are comfortable with a Prop 65 warning on a plant product
✗ Also skip if…
- You want a named growing region
Micro Ingredients packs 151 scoops of 3 g into a one-pound bag for around $20, making it the lowest cost per dose on this list. The panel declares 3 g organic spirulina, 2 g protein and about 40 mg naturally occurring chlorophyll, and the pack carries USDA Organic, cGMP, GMO-free and third-party-lab-tested marks. It also carries a California Prop 65 lead warning, which is why a product this cheap and this well-labelled does not rank higher.
How we built the SAC Product Score™ — 8.2/10
Dose vs Clinical Range25%9.2/10
One scoop is about 3 g, the studied daily amount; 151 scoops per pound.
Purity & Contaminant Control25%6.5/10
The pack claims cGMP and third-party lab testing, but the same panel prints a California Prop 65 lead warning, the only one on this list.
Label Transparency20%8/10
The panel declares 3 g organic spirulina, 2 g protein and about 40 mg naturally occurring chlorophyll per scoop, with no other ingredients.
Certifications & Sourcing15%8.4/10
USDA Organic (Organic Certifiers), cGMP and GMO-free marks on the pack; growing region not named.
Value15%9.6/10
About $0.13 per 3 g serving, the lowest cost per dose in the group.
The product at a glance
- Form
- Powder
- Serving
- 1 scoop (about 3 g)
- Count
- 1 lb, 151 servings
- Disclosed per serving
- 3 g organic spirulina, 2 g protein, about 40 mg chlorophyll
- Other ingredients
- None
- Seals
- USDA Organic, cGMP, GMO free, third party lab tested
- Warning
- California Prop 65 lead warning printed on the label
- Cost per dose
- ~$0.13 per 3 g serving
Marketing claims vs. reality
Partial
“Third party lab tested.”
The pack states third-party lab testing, yet the same label carries a Prop 65 lead warning; testing is claimed, but the result it implies is not a clean one.
Partial
“Rich in vegan protein.”
2 g protein per 3 g scoop is declared, which is a high protein fraction for a plant but a small absolute amount.
What our test actually found
01The Prop 65 warning is the story
California requires the warning when lead exposure at the label serving may exceed 0.5 micrograms a day. Spirulina takes up metals from its water, so a printed warning is a direct comment on the growing environment. None of the US-grown products on this list carry one.
02Everything else is excellent for the money
Full 3 g scoop, chlorophyll and protein disclosed, organic certification, cGMP, a pound for around $20. If the warning does not bother you, nothing here is cheaper per gram.
Pros & cons, no sugar-coating
Pros
- Lowest cost per 3 g dose on the list
- USDA Organic, cGMP and third-party-lab-tested marks
- Chlorophyll and protein declared
- 151 servings per bag
Cons
- California Prop 65 lead warning printed on the label
- Growing region not named
- Plain powder taste
Best value, docked for the warning on its own label
If price per dose is your ranking, this wins. Our ranking weights contaminant control at a quarter of the score, and a printed lead warning costs it the podium. Buy it knowingly, or pay a little more for Anthony's California powder without the warning.
Affiliate link — Super Achiever Club earns a small commission at no extra cost to you.
If this doesn’t fit — try these
Nutrex Hawaii Pure Hawaiian Spirulina
8.8/10Hawaiian-pond spirulina that hits the full 3 g trial dose in one six-tablet serving, declares its iron and protein, and carries the longest seal list on the list.
See it on the list →Earthrise California Spirulina
8.6/10The only product here that prints its c-phycocyanin content, 165 mg per 3 g serving, from a single California farm; you pay for that transparency with the highest cost per dose on the list.
See it on the list →Anthony's California Spirulina Powder
8.5/10A California-grown powder with a full food-style Nutrition Facts panel, 3 g per teaspoon, batch-tested gluten-free, at about a quarter per dose.
See it on the list →Sources & further reading
- Roy-Lachapelle A, Solliec M, Bouchard MF, Sauvé S. Toxins (Basel). 2017;9(3):76.Roy-Lachapelle A, Solliec M, Bouchard MF, Sauvé S · 2017 · Toxins · PMID 28245621
Detection of Cyanotoxins in Algae Dietary Supplements
Analysis of eighteen algae dietary supplements detected cyanotoxins in a subset of products, underlining that cultivation control and finished-product testing, not the algae species alone, determine safety.
- Serban MC, et al. Clin Nutr. 2016;35(4):842-51.Serban MC, Sahebkar A, Dragan S, et al. · 2016 · Clinical Nutrition · PMID 26433766
A systematic review and meta-analysis of the impact of Spirulina supplementation on plasma lipid concentrations
Pooling seven randomized trials, spirulina supplementation lowered total cholesterol, LDL and triglycerides and raised HDL, with doses across the trials ranging from about 1 to 8 g a day.