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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter / Tate, Jillian R.

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Online
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1437-4331
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Volume 48, Issue 9 (Sep 2010)

Issues

Blood cell and iron status analytes of preterm and full-term infants from 20 weeks onwards during the first year of life

Timo I. Takala
  • Department of Clinical Chemistry, Turku University Hospital, Turku, Finland
/ Enni Mäkelä
  • Department of Pediatrics, Turku University Hospital, Turku, Finland
/ Pauli Suominen
  • Telechemistry Oy, Turku, Finland
/ Jaakko Matomäki
  • Department of Pediatrics, Turku University Hospital, Turku, Finland
/ Helena Lapinleimu
  • Department of Pediatrics, Turku University Hospital, Turku, Finland
/ Liisa Lehtonen
  • Department of Pediatrics, Turku University Hospital, Turku, Finland
/ Allan Rajamäki
  • Department of Clinical Chemistry, Turku University Hospital, Turku, Finland
/ Kerttu Irjala
  • Mehiläinen Oy, Finland
/ Päivi M. Lähteenmäki
  • Department of Pediatrics, Turku University Hospital, Turku, Finland
Published Online: 2010-05-19 | DOI: https://doi.org/10.1515/CCLM.2010.242

Abstract

Background: The goal of this study was to evaluate the dynamics of blood cell and iron status laboratory analytes in preterm and full-term infants during the first year of life.

Methods: This was a prospective study of 100 preterm and 50 full-term infants. Preterm infants received iron supplementation beginning at 3 weeks of age. Laboratory tests were serially analyzed up to 12 months of corrected age.

Results: Estimated means and the 95% reference intervals (RIs) from 20 weeks of age and onwards are presented separately for preterm and full-term infants. At the age of 20 weeks, mean hemoglobin (Hb) in preterm infants was lower than mean Hb in full-term infants, but this difference changed during follow-up. Ferritin concentrations were initially lower in preterm infants, but decreased to similar levels in both groups. Estimated mean values for transferrin receptor and reticulocyte Hb content were quite stable between the ages of 20 and 55 weeks in both groups.

Conclusions: Our study suggests that the same RIs for preterm and full-term infants can be used from the age of 20 or 30 weeks onwards, depending on the analyte. The RIs will help physicians detect iron deficiency or other problems of erythropoiesis in infants.

Clin Chem Lab Med 2010;48:1295–301.

Keywords: complete blood count; ferritin; iron deficiency; reticulocyte; transferrin receptor

About the article

Corresponding author: Timo I. Takala, MD, Department of Clinical Chemistry, Turku University Hospital, PO Box 52, 20521 Turku, Finland Phone: +358-2-3133931, Fax: +358-2-3133923,


Received: 2009-12-08

Accepted: 2010-03-02

Published Online: 2010-05-19

Published in Print: 2010-09-01


Citation Information: Clinical Chemistry and Laboratory Medicine, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: https://doi.org/10.1515/CCLM.2010.242. Export Citation

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