A comparison of complete blood count reference intervals in healthy elderly vs. younger Korean adults: a large population study
-
Eun Jin Lee
, Miyoung Kim, Eunyup Lee
, Kibum Jeon , Jiwon Lee , Jee-Soo Lee , Han-Sung Kim , Hee Jung Kang and Young Kyung Lee
Abstract
Background
The use of laboratory reference intervals based on younger populations is of questionable validity in older populations. We established reference intervals for 16 complete blood count (CBC) parameters in healthy elderly Koreans aged ≥60 years and compared them to those of individuals aged 20–59 years.
Methods
Among 64,532 individuals (39,609 men and 24,923 women) aged ≥20 years who underwent medical checkups, 8151 healthy subjects (12.6%, 5270 men and 2881 women, including 675 and 511, respectively, who were ≥60 years of age) were enrolled based on stringent criteria including laboratory, imaging and endoscopy results; previous medical history; and medication history. CBC parameters were measured using an Advia2120i instrument.
Results
Overall, healthy individuals aged ≥60 years did not require separate reference intervals from those aged <60 years except for red cell distribution width (RDW) and mean corpuscular hemoglobin (MCH) in women. However, subjects aged ≥60 years still required sex-specific reference intervals for red blood cell count, hemoglobin, hematocrit, MCH, monocytes and eosinophils. Separate reference intervals were required for MCH, eosinophils and basophils for certain age subgroups of men aged ≥60 years, and for MCH and RDW in certain age subgroups of women aged ≥60 years, compared to counterparts <60 years of age.
Conclusions
Healthy elderly Koreans can use the same reference intervals as younger populations. Thus, abnormal CBC results may not necessarily be attributable to physiologic changes but possible underlying diseases that should be investigated.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The study was supported by the Hallym University Medical Center CDW Research Fund.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
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- Opinion Papers
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- IFCC Papers
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- Droplet digital PCR for the simultaneous analysis of minimal residual disease and hematopoietic chimerism after allogeneic cell transplantation
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- Commutable whole blood reference materials for hemoglobin A1c validated on multiple clinical analyzers
- When results matter: reliable creatinine concentrations in hyperbilirubinemia patients
- Mass spectrometry based analytical quality assessment of serum and plasma specimens with patterns of endo- and exogenous peptides
- Association of serum sphingomyelin profile with clinical outcomes in patients with lower respiratory tract infections: results of an observational, prospective 6-year follow-up study
- Effect of an activated charcoal product (DOAC Stop™) intended for extracting DOACs on various other APTT-prolonging anticoagulants
- Hematology and Coagulation
- Commutability assessment of reference materials for the enumeration of lymphocyte subsets
- Circulating platelet-neutrophil aggregates as risk factor for deep venous thrombosis
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- Indirect determination of hematology reference intervals in adult patients on Beckman Coulter UniCell DxH 800 and Abbott CELL-DYN Sapphire devices
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- Counterpoint to the Letter to the Editor by Badrick and Parvin in regard to Comparison of four methods of establishing control limits for monitoring quality controls in infectious disease serology testing
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