Evidence map›Paper›PMID 33832353›Full record

ArticleJournal of diabetes science and technology2021

Feasibility of Continuous Ketone Monitoring in Subcutaneous Tissue Using a Ketone Sensor.

Shridhara Alva, Kristin Castorino, Hyun Cho, Junli Ou

Abstract read
In one paragraph

Article in Journal of diabetes science and technology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Guideline
  3. Trial
  4. Review
  5. Design, Construction, and Application of Implantable Fiber Biosensors.Advanced materials (Deerfield Beach, Fla.) · 2026
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  13. Article
  14. Article
  15. Tandem metabolic reaction-based sensors unlock in vivo metabolomics.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  16. Article
  17. Review
  18. Revolutionizing Diabetes Care: From Tech to Therapeutics.Diabetes, metabolic syndrome and obesity : targets and therapy · 2025
    Article
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Shridhara AlvaAbbott Diabetes Care, Alameda, CA, USA.ORCID 0000-0003-3596-2034
Kristin CastorinoSansum Diabetes Research Institute, Santa Barbara, CA, USA.
Hyun ChoAbbott Diabetes Care, Alameda, CA, USA.
Junli OuAbbott Diabetes Care, Alameda, CA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe feasibility of measuring β-hydroxybutyrate in ISF using a continuous ketone monitoring (CKM) sensor using a single calibration without further adjustments over 14 days is described.

methodsA CKM sensor was developed using wired enzyme technology with β-hydroxybutyrate dehydrogenase chemistry. In vitro characterization of the sensor was performed in phosphate buffered saline at 37°C. In vivo performance was evaluated in 12 healthy participants on low carbohydrate diets, who wore 3 ketone sensors on the back of their upper arms to continuously measure ketone levels over 14 days. Reference capillary ketone measurements were performed using Precision Xtra® test strips at least 8 times a day.

resultsThe sensor is stable over 14 days and has a linear response over the 0-8 mM range. The operational stability of the sensor is very good with a 2.1% signal change over 14 days. The first human study of the CKM sensor demonstrated that the sensor can continuously track ketones well through the entire 14 days of wear. The performance with a single retrospective calibration of the sensor showed 82.4% of data pairs within 0.225 mM/20% and 91.4% within 0.3 mM/30% of the capillary ketone reference (presented as mM at <1.5 mM and as percentage at or above 1.5 mM). This suggests that the sensor can be used with a single calibration for the 14 days of use.

conclusionsMeasuring ketones in ISF using a continuous ketone sensor is feasible. Additional studies are required to evaluate the performance in intended patient populations, including conditions of ketosis and diabetic ketoacidosis.

Indexed as

KetonesSubcutaneous TissueBlood GlucoseFeasibility StudiesHumansRetrospective StudiesBlood GlucoseKetonescontinuous ketone monitoringdiabetes ketoacidosisfactory calibrationketogenicβ-hydroxybutyrate

Identifiers

PMID33832353
PMCPMC8252149

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.