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LABDOOR SCORE
59.3 of 100
Quality Rank 48 of 54

Value Rank 21 of 54


Ratings and Key Data

One serving of Kirkland Signature Omega-3 Fish Oil Concentrate measured 380mg omega-3 fatty acids, consisting of 240mg EPA and 80mg DHA. Furthermore, EPA + DHA content accounted for 33% of total fish oil content.

Label Accuracy
Product Purity
Nutritional Value
Ingredient Safety
Projected Efficacy
  • Analytical Tests 7
  • Serving Size 1 Softgel
  • Total Omega-3 380mg
  • EPA/Serving 240mg
  • DHA/Serving 80mg
  • Mercury 1 PPB (Upper Limit = 100 PPB)
  • PCB <0.01 PPM (Upper Limit = 0.09 PPM)

FULL REPORT


Label Accuracy

Label Accuracy
Category Average

Omega-3 fatty acid content was measured at 380mg/serving, 26.67% over its 300mg label claim.

While Kirkland Signature Omega-3 Fish Oil Concentrate does not disclose EPA + DHA content (for which it was penalized in our Label Accuracy score), our analysis recorded 240mg EPA/serving and 80mg DHA/serving.


Product Purity

Product Purity
Category Average

Mercury content measured at 1 PPB (parts per billion), below the 2.4 PPB category average. The Global Organization for EPA and DHA Omega-3 (GOED) mercury limit is 100 PPB. Bulk samples of this product also passed the six mineral assays, indicating presence of under 1 PPM of arsenic, lead, cadmium, bismuth, antimony, and silver.

Polychlorinated Biphenyl (PCB) content (representative of aroclors 1016, 1221, 1232, 1242, 1248, 1254, and 1260) measured at less than 0.01 PPM. The Food and Drug Administration's (FDA) 2 PPM limit on PCBs for the edible parts of fish/shellfish. California’s Proposition 65 requires products containing greater than 0.09 PPM of PCB content to bear a cancer warning.

Peroxide value recorded at 5 meq/kg, and p-anisidine value recorded at 14.2.

Note: Our freshness scores are based entirely on peroxide values, measures of primary oxidation in fatty acids. Flavoring agents have been shown to skew p-anisidine values (measures of secondary oxidation). LabDoor is currently researching alternative p-anisidine assays that have the capability to account for and eliminate the effects of flavoring.


Nutritional Value

Nutritional Value
Category Average

A single serving of Kirkland Signature Omega-3 Fish Oil Concentrate provides 380mg total omega-3 fatty acids, below the 1.1g - 1.6g daily Adequate Intake (AI) range set by the Institute of Medicine (IOM) for individuals over the age of 14. Of the total omega-3 content, EPA accounts for 240mg and DHA accounts for 80mg. There is currently no established daily recommended intake for EPA and DHA, although the World Health Organization's (WHO) recommendation -- 0.3g - 0.5g EPA + DHA/day with 0.8g - 1.1g ALA/day (which is partially converted to EPA and DHA) -- is held in high regard.

Furthermore, this product consists of 33% EPA + DHA content.


Ingredient Safety

Ingredient Safety
Category Average

Mercury content measured at 1 PPB, below the 2.4 PPB category average and significantly below the 100 PPB limit established by the Global Organization for EPA and DHA Omega-3 (GOED).

PCB content measured at less than 0.01 PPM, significantly below the 2 PPM limit set by the Food and Drug Administration (FDA) and the stricter 0.09 PPM limit enacted by California’s Proposition 65.


Projected Efficacy

Projected Efficacy
Category Average

Omega-3 fatty acids constitute 39% of this product's total fish oil content.

380mg omega-3, consisting of 240mg EPA and 80mg DHA, is expected to be only moderately effective based on an estimated 1g recommended daily intake; it is expected, however, that products with higher EPA + DHA content will show greater clinical efficacy.

Omega-3 fatty acids are clinically shown to improve cardiovascular conditions such as coronary heart disease, hyperlipidemia and hypertension, and, according to limited evidence, enhance cognition, reduce anxiety, improve athletic performance and decrease risk of certain cancers. Clinical research supporting the latter effects is promising, but not conclusive; additional research is required before any conclusions can be drawn.


These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.