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Reticulocyte Hemoglobin Equivalent (RET-He) in Early Detection of Iron Deficiency Among Blood Donors and Its Potential Impact on Donor Eligibility and Transfusion Safety

1. oktober 2026 oppdatert av: Tasneem Ashraf AbdelHafiz, Assiut University

Role of Reticulocyte Hemoglobin Equivalent (RET-He) in Early Detection of Iron Deficiency Among Blood Donors and Its Potential Impact on Donor Eligibility and Transfusion Safety

Blood donation is essential for healthcare, but repeated whole-blood donation can deplete the body's iron stores. Standard pre-donation screening relies on hemoglobin levels to ensure donor safety; however, a drop in hemoglobin is a late sign of iron deficiency. Consequently, donors with subclinical or latent iron depletion often pass standard pre-donation screening unnoticed.

The primary purpose of this study is to evaluate the clinical utility of Reticulocyte Hemoglobin Equivalent (RET-He) as an early laboratory marker for detecting iron deficiency among accepted blood donors. Because reticulocytes are newly formed red blood cells, RET-He reflects iron availability for hemoglobin production over the preceding few days, potentially detecting iron limitation much earlier than mature red blood cell indices or standard hemoglobin testing.

In this prospective observational study, approximately 300 eligible voluntary blood donors aged 18 to 60 years will be enrolled at the Main Blood Bank of Assiut University Hospitals. At the time of routine donation, blood samples will be analyzed for complete blood count (CBC) with RET-He, serum ferritin, iron profile (serum iron, total iron-binding capacity, and transferrin saturation), and C-reactive protein (CRP) to control for inflammation. Participants will also be reassessed at their subsequent regular donation visit (after 90 days for males and 120 days for females) to evaluate changes in iron indices over time and explore whether adding RET-He improves donor eligibility assessment and long-term donor health.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Studietype

Observasjonsmessig

Registrering (Antatt)

300

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 60 år (Voksen)

Tar imot friske frivillige

N/A

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The study population consists of voluntary adult blood donors attending the Main Blood Bank at the Central Blood Transfusion Services (CBTS), Department of Clinical Pathology, Assiut University Hospitals, Assiut, Egypt. Eligible participants comprise healthy male and female donors aged 18 to 60 years who fulfill routine national and institutional donor-selection standards, including pre-donation hemoglobin eligibility thresholds (Hb ≥ 14 g/dL for males and ≥ 12 g/dL for females).

Beskrivelse

Inclusion Criteria:

  • Voluntary blood donors eligible for donation according to standard national and institutional donor-selection criteria.
  • Adults aged 18 to 60 years.
  • Meeting accepted pre-donation hemoglobin thresholds for blood donation (hemoglobin ≥ 14.0 g/dL for males and ≥ 12.0 g/dL for females).
  • Both male and female donors eligible under local blood donation policies.
  • Provision of written informed consent prior to study participation.

Exclusion Criteria:

  • Known hematological disorders or chronic anemia unrelated to iron deficiency.
  • Known chronic kidney disease, active malignancy, or chronic inflammatory/autoimmune diseases.
  • History of recent blood transfusion.
  • Recent therapeutic iron treatment or regular iron supplementation within the preceding 3 months.
  • History of recent major bleeding or major surgery.
  • Inadequate or hemolyzed blood sample, or inability to obtain valid RET-He, complete blood count (CBC), or iron panel measurements.
  • Donors who withdraw consent.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Observasjonsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Kohorter og intervensjoner

Gruppe / Kohort
Eligible Voluntary Blood Donors

Voluntary blood donors aged 18 to 60 years who meet routine institutional pre-donation eligibility criteria, including acceptable hemoglobin levels (Hb ≥ 14 g/dL for males and ≥ 12 g/dL for females). Enrolled participants undergo blood sampling for complete blood count (CBC) and reticulocyte hemoglobin equivalent (RET-He) using the Atellica HEMA 580 automated analyzer. Serum ferritin is assessed on the ADVIA Centaur XPT platform, alongside serum iron, total iron-binding capacity (TIBC), calculated transferrin saturation (TSAT), and C-reactive protein (CRP). Participants are evaluated for latent/subclinical iron deficiency and followed up at their subsequent donation visit (90 days for males and 120 days for females).

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Area Under the Receiver Operating Characteristic Curve of RET-He for Detecting Iron Deficiency
Tidsramme: Baseline

The Area Under the Receiver Operating Characteristic Curve (AUC-ROC) will assess the diagnostic accuracy of Reticulocyte Hemoglobin Equivalent (RET-He, measured in pg via the Atellica HEMA 580 analyzer) in identifying iron deficiency among accepted blood donors. Iron deficiency is defined using reference biochemical markers, including serum ferritin (measured via the ADVIA Centaur XPT analyzer) and transferrin saturation (TSAT), in the context of C-reactive protein (CRP) levels to account for inflammation. The AUC-ROC score ranges from 0.5 (discrimination no better than chance) to 1.0 (perfect diagnostic discrimination).

Baseline

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. november 2026

Primær fullføring (Antatt)

1. november 2027

Studiet fullført (Antatt)

1. desember 2027

Datoer for studieregistrering

Først innsendt

1. oktober 2026

Først innsendt som oppfylte QC-kriteriene

1. oktober 2026

Først lagt ut (Faktiske)

6. oktober 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

6. oktober 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

1. oktober 2026

Sist bekreftet

1. oktober 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • RET-He in Donor Iron Status

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .