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Start with the official record, then define your question

A 510(k) is a premarket notification pathway. The sponsor demonstrates substantial equivalence to a legally marketed predicate device through intended use, technological characteristics and performance testing as needed. This is a clearance pathway, distinct from premarket approval. [4]

Use the FDA's device databases to find the device or company, then open the specific record and its linked documents. Registration or a purported registration certificate is not a substitute for that record; FDA does not issue device registration certificates. [5]

Before reading, write down the claim you want to check. “Does this exact model have a cleared wrinkle indication?” is a workable question. “Is red light FDA approved?” combines an entire technology category with a regulatory status that needs a specific device and pathway.

Your first pass should produce three answers: which device, which use and which decision. If one is unresolved, retain the uncertainty. Do not fill it with a similar-looking mask, a matching color name or another company's K-number.

Separate the decision, indications, summary and performance

These sections answer different questions. FDA publishes the Indications for Use statement with the substantial-equivalence letter, while the summary explains the basis for the equivalence claim. [3]

Treat this table as a reading method. It is not a replacement for the text of the particular record or a legal determination about a product.

Match the device before matching its benefits

Create a short identity note from the physical label and current documentation: brand or trade name, model, responsible company, operating modes and the claimed K-number. Compare it with the public record. The FDA's submission guidance distinguishes common names, trade names, model numbers, classification information and the 510(k) owner; they are not interchangeable identifiers. [3]

If the consumer brand and applicant differ, ask for documentation connecting the branded model to the device in the record. A name difference is a question to resolve, not proof of either a match or a violation. A photograph, shared enclosure or seller's statement alone does not complete that verification.

Keep every comparison tied to its column and mode

Highlight the subject-device column before reading a comparison table. Then annotate each claim with its mode and intended purpose. For example, ask whether a phrase concerns red light, a combined mode or infrared heating. Do not combine the most attractive indications and specifications from different columns into an imaginary device.

Also distinguish a mode's function from a disease claim. A light-color menu is not an indication list. If documentation leaves model-specific mode availability or permitted treatment areas unclear, record that as an open question for the manufacturer rather than assigning every family-level feature to every model.

K223544: a neutral documentary example

The official database identifies Guangdong Newdermo Biotech Co., Ltd. as the applicant, names the LED light therapy mask models FM-01, FM-02 and FM-03, and records a substantially equivalent decision dated February 23, 2023. Its primary product code is OHS, with ILY and OLP also listed. [1]

The linked 14-page PDF has the decision letter on PDF pages 1–2, the indications form on page 3, and the summary on pages 4–14. Use PDF page numbers here; the summary has separate internal pagination. [2]

These are condensed document labels, not usage directions. Consult the original indications form and summary for the full wording. The summary's infrared intended-use text also includes temporary relief of minor muscle and joint pain; the form's wording differs. Preserve both locations rather than silently combining them. [2]

This example is not a product recommendation or a verified identity match for SaintQueen. It does not establish clearance for another manufacturer's device. In particular, an infrared heating purpose should not be turned into a general skin-benefit claim for every near-infrared LED product.

Performance testing is not automatically a new human trial

On PDF pages 13–14, K223544 lists nonclinical electrical, electromagnetic, home-use, light-source and biocompatibility testing, plus software verification and validation. The clinical-data entry says “Not applicable.” A later closing sentence nevertheless refers generally to nonclinical and clinical performance. That wording does not document a new human trial. [2]

FDA explains that the evidence needed for substantial equivalence depends on the device and question under review. Clinical data are not needed for most 510(k)-cleared devices. Accordingly, absence of a new clinical trial is not itself proof that a clearance is invalid. [3]

For reading purposes, keep two questions apart: What supported the regulatory equivalence decision? and What human evidence supports a particular outcome claim? A description of electrical safety testing cannot supply a wrinkle-improvement percentage, patient sample or follow-up period. To assess a clinical claim, obtain the relevant study and check its device, population, comparison and measured outcome.

What the public summary does not give you

FDA's guidance describes summaries as containing summary data rather than raw data. The downloadable summary is therefore not the complete submission. [3] For this article, the complete application, underlying test reports and FDA's internal review materials were not obtained.

A useful evidence note distinguishes four access levels: full public document read; summary-level test description read; underlying report not obtained; current device instructions not obtained. Saying “official record checked” without those distinctions can make a limited document review sound like an independent audit of every test.

Do not invent missing test methods, standards editions, measurement geometry, clinical results or warning lists. If those details matter to your question, request the relevant dated report or current labeling and identify the exact model and configuration it covers.

Keep a verification worksheet you can revisit

The following is a practical documentation checklist, not a universal regulatory form:

1. Identify the unit: record the label's model and company, including any different consumer trade name.
2. Save the official record: note its URL, K-number, decision and the date you accessed it.
3. Record the relevant indication: preserve the mode, purpose and qualifying words instead of replacing them with a broader marketing term.
4. Trace the identity: retain documentation linking a differently branded model to the named device; mark unresolved links explicitly.
5. Classify the evidence: label each source as a decision, public summary, full test report, human study or current instructions.
6. Write the remaining question: specify exactly which model, mode, claimed outcome or safety detail still needs confirmation.

For each proposed claim, write one sentence: “The document supports ___ for ___; it does not establish ___.” This forces the device and claim to stay together. If you cannot complete the first half with an identifiable source, keep the claim unverified.

Frequently asked questions

The PDF contains a predicate's indication. Can I apply it to the subject device?

Check the subject device's indications first. A predicate is the comparator for the equivalence assessment, not a menu of additional uses to import. A table entry needs its column heading and context to remain meaningful. [4]

Can I identify a mask from its FDA classification name alone?

No. A classification describes a device category. Use the named device, applicant, models and description to investigate identity. A classification title containing the word “laser” should not override an LED device's actual source description. K223544 illustrates why the classification label and device description must be read together. [1] [2]

What if the record offers a 510(k) statement instead of a summary?

These are different disclosure options. FDA describes a statement as a commitment by the owner to provide supporting safety and effectiveness information in response to a written request. Read which option the record uses; do not assume a missing downloadable summary means there was no clearance. [3]

Does an old decision date mean I have the latest instructions?

No. A decision date identifies a regulatory event. Ask for the current IFU revision for the exact model you have. Keep the decision date, your access date and the labeling revision date as separate fields so that a recent database visit is not mistaken for new operating instructions.

Finish with a bounded conclusion

A sound reading ends with a named device, a specific scope, a description of the evidence actually available and a short list of unresolved questions. That is a more useful result than turning one FDA record into a blanket claim about LED therapy.