Evidence map›Paper›PMID 30140071›Full record

Trial reportPediatric research2018

Reference intervals for reticulocyte hemoglobin content in healthy infants.

Anders Löfving, Magnus Domellöf, Lena Hellström-Westas, Ola Andersson

Open access · bronzeAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Pediatric research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.1field-weighted citation impact, top 12% 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, 27 citations in OpenAlex.

  1. A CBC drawn postnatally from umbilical cord blood can provide valuable diagnostic information for infants admitted to the NICU.Journal of perinatology : official journal of the California Perinatal Association · 2026
    Review
  2. Article
  3. Article
  4. Serum ferritin values in neonates <29 weeks' gestation are highly variable and do not correlate with reticulocyte hemoglobin content.Journal of perinatology : official journal of the California Perinatal Association · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Urinary ferritin; a potential noninvasive way to screen NICU patients for iron deficiency.Journal of perinatology : official journal of the California Perinatal Association · 2021
    Article
  11. Reconciling markedly discordant values of serum ferritin versus reticulocyte hemoglobin content.Journal of perinatology : official journal of the California Perinatal Association · 2021
    Article
  12. Article
  13. Review
  14. Review
  15. Article
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 at 3 institutions in 1 country.

Anders LöfvingDepartment of Pediatrics, Hospital of Halland, Halmstad, Sweden.
Magnus DomellöfDepartment of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden.
Lena Hellström-WestasDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Ola AnderssonDepartment of Pediatrics, Hospital of Halland, Halmstad, Sweden. ola.andersson@kbh.uu.se.
Uppsala University · SEHallands sjukhus Halmstad · SEUmeå University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIron deficiency anemia in childhood is a serious public health problem worldwide. Reticulocyte hemoglobin content (Ret-He) is a novel biomarker of iron deficiency adopted for adults but there is a lack of reference intervals for Ret-He in infants. The aim of this study was to provide data from healthy infants.

methodsSwedish infants (n = 456), born at term after normal pregnancies were included. Ret-He was measured at birth (umbilical cord sample), 48-72 h, 4 months, and 12 months. Reference intervals were calculated as ±2 standard deviations from the mean of Ret-He.

resultsReference intervals for newborn Ret-He were 27.4 to 36.0 pg/L (N = 376) in the cord sample, 28.1-37.7 pg/L (N = 253) at 48-72 h, 25.6-33.4 pg/L (N = 341) at four months and 24.9-34.1 pg/L (N = 288) at 12 months. Ret-He was significantly lower among iron-deficient infants, at 4 months mean difference (95% CI) -4.2 pg/L (-6.1 to -2.4) and at 12 months mean difference (95% CI) -3.4 pg/L (-5.0 to -1.8).

conclusionsThis longitudinal study presents Ret-He reference intervals based on non-anemic and non-iron-deficient infants and constitutes a step towards standardizing Ret-He as a pre-anemia biomarker of iron deficiency in children.

Indexed as

Anemia, Iron-DeficiencyBiomarkersCase-Control StudiesFemaleHemoglobinsHumansInfantInfant, NewbornLongitudinal StudiesMaleReference ValuesReticulocytesSwedenBiomarkersHemoglobins

Identifiers

PMID30140071
OpenAlexW2888123584

What OpenQuestion holds

Textmetadata
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.