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Claimed concentration versus measured concentration

G_CONCENTRATION_CLAIM
MethodologyBack to all terms

What does this word mean?

The concentration stated on a product is a claimed value and is not the same as a laboratory measurement of the finished formulation.

Read with care

Both exist but mean different things: the first is raw material labelling such as raw material purity or nominal content, the second is the finished-product addition level.

Expanded note

Both exist but mean different things: the first is raw material labelling such as raw material purity or nominal content, the second is the finished-product addition level. Brand copy routinely conflates them. Only the brand's own wording is recorded, always labelled as a claimed figure rather than measured, and the product database has concrete concentration figures for only 93 of 644 products while 435 remain entirely undetermined, which is itself information.

A real example from our data

Not a generic example.

Measured in the site database, the 93 products with stated concentrations break down as 68 in ppm, 21 in ppb and only 4 in percent. The numeric spread is enormous, from 100 ppm through 30,000 ppm down to 0.5 ppb, which shows the brand labelling conventions are themselves inconsistent.

Related terms

INCI position (a reading heuristic)A method of inferring whether the actual amount of an ingredient is meaningful by looking at its position in the ingredient list.1% threshold (preservative boundary)A regulatory threshold above which a substance must be managed as a preservative, used on ingredient lists to draw the line above 1%.Evidence gradeThe strength-of-evidence label the site attaches to every claim, ranging from human RCT through human observational, animal, cell and in vitro, review, correction notice and retraction.

Where this term appears

Topical vs Injectable · site data →
high
INCIDecoder product database (concentration disclosure: 92 labelled, 52 at or below 1%, 435 undetermined, 65 without DNA)
INCIDecoder product database (concentration disclosure: 92 labelled, 52 at or below 1%, 435 undetermined, 65 without DNA)

Educational reference only. This site does not provide medical advice, treatment courses, injection counts, clinic recommendations or price recommendations.

PDRN is not approved by the FDA for injection or any therapeutic use. Topical and injectable PDRN are parallel facts under different regulatory pathways and must not be directly equated.

PN is not PDRN. Evidence grades are labelled on every factual element; in vitro and animal research is never described as clinical efficacy.