Measurement / residue studycited by the Tayebat archiveabstract only checked A-FSH-18 standard review
Metals in imported pangasius
Determining the arsenic, cadmium, lead, copper and chromium contents by atomic absorption spectrometry in Pangasius fillets from Vietnam.
Overview
Molognoni L et al.. J Sci Food Agric 2016 · PMID 26439310 · DOI 10.1002/jsfa.7486
Most toxic metals were undetectable; some samples exceeded the cadmium limit.
Does the study support the specific claim? Partly · Methodological quality: low
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Measure metals.
- How was the study done?
AAS.
- How many people, animals or samples were studied?
20 fillets.
- What was actually found?
Mostly safe; some Cd.
- What do the results mean in everyday life?
Monitoring helps.
- What are the study's limitations?
Small.
- What does it say about Elawady's specific claim?
Weak support.
- Do the results apply to Germany and Europe?
Moderate.
Scientific in-depth review
1. Full reference
- Authors
- Molognoni L, Vitali L, Ploêncio LA, Santos JN, Daguer H
- Journal
- J Sci Food Agric
- Year
- 2016
- Identifier
- PMID 26439310 DOI 10.1002/jsfa.7486
- Verification
- verified – PubMed E-utilities efetch, 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract/record
2. Research question
Metal content of pangasius fillets?
3. Study design and population
- Study design
- Measurement / residue study – Atomic absorption measurement of metals in imported Vietnamese pangasius
- Population
Pangasius fillets exported to Brazil
- Country
Vietnam/Brazil
- Period
published 2016
- Sample size
20
4. Methods and endpoints
- Comparator
Limits
- Endpoints
As, Cd, Pb, Cu, Cr
5. Actual results
- Results
As, Cr, Pb below LOD; Cu mean 0.0234 mg/kg; Cd mean 0.0547 mg/kg with some non-compliant samples.
- Absolute risks
not reported
- Authors' conclusion
No hazard for As, Cr, Cu, Pb; Cd non-compliance shows need for monitoring.
6. Strengths
7. Weaknesses
- n=20
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
9. Assessment of the statistical interpretation
10. Relevance to the specific claim
C-FSH-02 context.
11. Independent contrary findings
Itself.
12. Transferability to Germany and Europe
Moderate.
13. Overall methodological judgement
Mostly reassuring.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | low |
| Risk of bias | some concerns |
| Precision of results | low |
| Directness | direct |
| Reproducibility | unknown |
| Consistency with the overall evidence | unknown |
| Regional transferability | moderate |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
15. Linked fact checks
- Farmed fish today accumulate PCBs, dioxins and PBDEs at concentrations significantly higher than in their wild counterparts (present-tense generalisation in the archive summary). – Studies contradicting or limiting the claim
Use by the Tayebat archive
Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.
- What the archive says about the study
Bibliography only.
- A. What was actually studied?
Metals in pangasius.
- B. What did the authors find?
Mostly below LOD; some Cd non-compliance.
- C. What conclusions do the authors themselves draw?
Monitoring needed.
- D. What does the archive derive from it?
Implied contamination of farmed fish.
- E. Is this derivation scientifically justified?
Largely reassuring results; archive selection omits this.
- Adequacy of the interpretation (by the archive)
- not applicable