Evidence map›Paper›PMID 38368497›Full record

ArticlePediatric research2025

Skin color influences transcutaneous bilirubin measurements: a systematic in vitro evaluation.

Alida J Dam-Vervloet, Claudia F Morsink, Marleen E Krommendijk, Ingrid M Nijholt, Henrica L M van Straaten, Lieke Poot, Nienke Bosschaart

Open access · hybridAbstract read
In one paragraph

Article in Pediatric research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
16.6field-weighted citation impact, top 1% of its field
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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

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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

7 authors at 2 institutions in 1 country.

Alida J Dam-VervloetBiomedical Photonic Imaging group, Technical Medical Centre, University of Twente, Enschede, The Netherlands. a.j.dam@isala.nl.
Claudia F MorsinkBiomedical Photonic Imaging group, Technical Medical Centre, University of Twente, Enschede, The Netherlands.
Marleen E KrommendijkBiomedical Photonic Imaging group, Technical Medical Centre, University of Twente, Enschede, The Netherlands.
Ingrid M NijholtInnovation & Science Department, Isala hospital, Zwolle, The Netherlands.
Henrica L M van StraatenNeonatology Department, Isala hospital, Zwolle, The Netherlands.
Lieke PootMedical Physics Department, Isala hospital, Zwolle, The Netherlands.
Nienke BosschaartBiomedical Photonic Imaging group, Technical Medical Centre, University of Twente, Enschede, The Netherlands.
University of Twente · NLIsala · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveConcerns have been raised about the effect of skin color on the accuracy of transcutaneous bilirubin (TcB) measurements, a widely used method for hyperbilirubinemia diagnosis in newborns. Literature is inconclusive, with both reported under- and overestimations of the TcB with increasing skin pigmentation. Therefore, the influence of skin color on TcB measurements was systematically evaluated in a controlled, in vitro setting.

methodsA bilirubin meter (JM-105) was evaluated on layered phantoms that mimic neonatal skin with varying dermal bilirubin concentrations (0-250 µmol/L) and varying epidermal melanosome volume fractions (0-40%; light-dark skin color).

resultsTcB measurements were influenced by skin pigmentation. Larger mimicked melanosome volume fractions and higher bilirubin levels led to larger underestimations of the measured TcB, compared to an unpigmented epidermis. In the in vitro setting of this study, these underestimations amounted to 26-132 µmol/L at a TcB level of 250 µmol/L.

conclusionThis in vitro study provides insight into the effect of skin color on TcB measurements: the TcB is underestimated as skin pigmentation increases and this effect becomes more pronounced at higher bilirubin levels. Our results highlight the need for improved TcB meter design and cautious interpretation of TcB readings on newborns with dark skin. IMPACT: Key message: Skin color influences transcutaneous bilirubin measurements: the darker the skin, the larger the underestimation. What this study adds to existing literature: Existing literature is inconclusive regarding the influence of skin color on transcutaneous bilirubin measurements. This study systematically evaluates and clarifies the influence of skin color on transcutaneous bilirubin measurements in a controlled, in vitro setting. IMPACT: This study aids to better interpret the measured TcB level in patients with varying skin colors, and is particularly important when using TcB meters on patients with dark skin colors.

Indexed as

BilirubinHyperbilirubinemia, NeonatalNeonatal ScreeningSkinSkin PigmentationHumansInfant, NewbornPhantoms, ImagingBilirubin

Identifiers

PMID38368497
PMCPMC12119333
OpenAlexW4391899384

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.