Evidence map›Paper›PMID 31720688›Full record

ArticleThe Journal of clinical endocrinology and metabolism2020

Sex-specific Estrogen Levels and Reference Intervals from Infancy to Late Adulthood Determined by LC-MS/MS.

Hanne Frederiksen, Trine Holm Johannsen, Stine Ehlern Andersen, Jakob Albrethsen, Selma Kløve Landersoe, Jørgen Holm Petersen, Anders Nyboe Andersen, Esben Thyssen Vestergaard, Mia Elbek Schorring, Allan Linneberg and 3 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed, 5 pooled it
9.4field-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

101 citing papers in PubMed, 5 syntheses or guidelines pooled it, 188 citations in OpenAlex.

  1. Pooled it
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  6. Article
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  8. Mapping of sex hormones in the testicular vein of healthy men.The Journal of clinical endocrinology and metabolism · 2026
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  12. The HIV Reservoir and Immune Landscape Across the Life Course of Women: Implications for Cure Strategies.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026
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  20. Observational

41 more citing papers are in PubMed but not listed here.

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

13 authors at 2 institutions in 1 country.

Hanne FrederiksenDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Trine Holm JohannsenDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Stine Ehlern AndersenDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Jakob AlbrethsenDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Selma Kløve LandersoeThe Fertility Clinic, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Jørgen Holm PetersenDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Anders Nyboe AndersenThe Fertility Clinic, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Esben Thyssen VestergaardPaediatrics and Adolescent Medicine, Aarhus University Hospital, Aahus, Denmark.
Mia Elbek SchorringPaediatrics and Adolescent Medicine, Aarhus University Hospital, Aahus, Denmark.
Allan LinnebergCenter for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark.
Katharina M MainDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Anna-Maria AnderssonDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Anders JuulDepartment of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
University of Copenhagen · DKAarhus University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextThe lack of sensitive and robust analytical methods has hindered the reliable quantification of estrogen metabolites in subjects with low concentrations.

objectiveTo establish sex-specific reference ranges for estrone (E1) and estradiol (E2) throughout life and to evaluate sex-differences using the state-of-the-art liquid chromatography tandem mass spectrometry (LC-MS/MS) method for quantification of E1, E2, and estriol (E3).

designLC-MS/MS method development and construction of estrogen reference ranges. SETTINGS: Population-based cross-sectional cohorts from the greater Copenhagen and Aarhus areas.

participantsHealthy participants aged 3 months to 61 years (n = 1838).

resultsAn isotope diluted LC-MS/MS method was developed and validated for measurements of serum E1, E2, and E3. Limits of detections (LODs) were 3 pmol/L (E1), 4 pmol/L (E2), and 12 pmol/L (E3), respectively. This sensitive method made it possible to differentiate between male and female concentration levels of E1 and E2 in children. In girls, E2 levels ranged from <LOD to 100 pmol/L during mini-puberty, whereas it was ≤20 pmol/L during childhood. E1 and E2 increased with age and pubertal breast stage and varied during the menstrual cycle; E1 was lower than E2 in girls and premenopausal women, and higher than E2 in postmenopausal women. In boys, E1 and E2 increased with age and pubertal stage, whereas little changes with age were observed in men. High E3 concentrations were confirmed in pregnant women.

conclusionReference ranges of simultaneous quantification of E1 and E2 by this novel specific and highly sensitive LC-MS/MS method provide an invaluable tool in clinical practice and in future research studies.

Indexed as

Sex FactorsAdolescentAdultChildChild, PreschoolChromatography, LiquidEstradiolEstroneFemaleHealthy VolunteersHumansInfantMaleMiddle AgedReference ValuesSensitivity and SpecificityEstradiolEstronechildhoodestradiolestroneLC-MS/MSmenopausemenstrual cyclemini-pubertypubertal developmentreference range

Identifiers

PMID31720688
PMCPMC7007877
OpenAlexW2983800014

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.