Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 349

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Two Simple Methods for Measuring Iodine in Urine

DUNN, JOHN T., CRUTCHFIELD, HELEN E., GUTEKUNST, RAINER, DUNN, ANN D.·1993·Thyroid

Abstract

Urinary iodine excretion is currently the most convenient laboratory marker of iodine deficiency. Accelerating international interest in correcting this condition demands rapid, simple methods for assessment and monitoring. We describe two adaptations of the Sandell-Kolthoff reaction, in which urine is first digested with chloric acid and iodine then determined from its catalytic reduction of ceric ammonium sulfate in the presence of arsenious acid. Both methods use gentle digestion by chloric acid in a heating block. Method A detects iodine in a colorimeter, method B by the indicator ferroin and a stopwatch. Results with 12 samples ranging from 1.8 to 19.0 micrograms/dL (0.14-1.48 mumol/L) differed from those in a reference laboratory by a mean of 9.1% for method A and 15.7% for method B. One technician can perform at least 150 tests per day at a total cost of less than $0.50 each. The speed, low cost, and simple instrumentation make these methods well suited to epidemiological assessment of iodine deficiency in developing countries.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1089/thy.1993.3.119

Cites

7 of 7 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 7 references

Cited by

See all 349

Metadata

Authors
DUNN, J. T., CRUTCHFIELD, H. E., GUTEKUNST, R., & DUNN, A. D.
Venue
Thyroid
Published
1993-01
Volume
3
Issue
2
Pages
119-123
ISSN
  • 1050-7256 (ISSN-L)
  • 1557-9077
OpenAlex
W1965965147
Cited by
349
References
7
FWCI
3.45
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Two Simple Methods for Measuring Iodine in Urine. https://app.cochat.ai/papers/10.1089/thy.1993.3.119
The paper
DUNN, J. T., CRUTCHFIELD, H. E., GUTEKUNST, R., & DUNN, A. D. (1993). Two Simple Methods for Measuring Iodine in Urine. Thyroid. https://doi.org/10.1089/thy.1993.3.119

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.