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Distributed product

Q-Plex™ Human sTFR

  • Regulatory status:RUO
  • Type:Singleplex Assays
  • Other names:TfR
  • Species:Human
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Cat. No. Size Price

470249HU 96 wells (1 kit)
PubMed Product Details
Technical Data

Cat # changed from RQS470249HU to 470249HU


Singleplex Assays


Serum, Plasma

Sample Requirements

50 µl/well


Store the complete kit at 2–8°C. Under these conditions, the kit is stable until the expiration date.

Calibration Range

107–0.1468 mg/L



  • For research use only
  • The kit measures Human sTFR
  • This kit is validated for use with plasma, serum

Research topic

Iron metabolism, Oncology


The transferrin receptor (TfR) is the gateway for transferrin-bound-iron entering all body cells. TfR is abundant on the surface of many newly formed cells, but the erythroid marrow cells account for 70 to 80 % of the total body TfR content. The soluble (or serum) transferrin receptor (sTfR) is a circulating truncated form of the membrane receptor protein; it is an 85 kDa glycoprotein forming in serum a 320 kDa complex with diferric transferrin. The serum sTfR concentration reflects the total body mass of cellular transferrin receptor. Anaemias associated with enhanced erythropoiesis and iron deficiency result in an elevation in the sTfR values. Elevation of the soluble transferrin receptor may be also caused by haemolytic anaemia, polycythaemia and thalassemia while aplastic anaemia and chronic renal failure may result in its decrease. The most important clinical use of the sTfR determination is in the differential diagnosis between iron deficiency anaemia and the anaemia of chronic disease.

Summary References (9)

References to Transferrin receptor

  • Raya G. et al.: Soluble transferrin receptor (sTfR): biological variations and reference limits. Clinical Chemistry and Laboratory Medicine, 39, 1162–1168 (2001)
  • Cotton F. et al.: Measurement of soluble transferrin receptor by immunoturbidimety and immunonefelometry. Clinical Biochemistry, 33, 263–267 (2000)
  • Cook J. D.: The measurement of serum transferrin receptor. The American Journal of the Medical Sciences 318, 269–276 (1999)
  • Olivares M. et al.: Usefulness of serum transferrin receptor and serum ferritin in diagnosis of iron deficiency in infancy. American Journal of Clinical Nutrition 72, 1191–1195 (2000)
  • Suominen P. et al.: Single values of serum transferrin receptor and transferrin receptor ferritin index can be used to detect true and functional iron deficiency in rheumatoid arthritis patients with anemia. Arthritis & Rheumatism 43, 1016–1020 (2000)
  • De Block C. E. M. et al.: Soluble transferrin receptor level. A new marker for iron deficiency anemia, a common manifestation of gastric autoimmunity in type 1diabetes. Diabetes Care 23, 1384–1388 (2000)
  • Kolbe-Busch S. et al. Determination of the soluble transferrin receptor in Serum: Evaluation of two enzyme immunoassays and a particle-enhanced immunonephelometric assay. Clinical Laborators 45, 295–304 (1999)
  • Hikawa A. et al.: Soluble transferrin receptor-transferrin complex in serum: measurement by latex agglutination nephelometric asssay. Clinica Chimica Acta 254, 159–172 (1996)
  • Flowers C. H. et al.: The clinical measurement of serum transferrin receptor. Journal of Laboratory and Clinical Medicine 114, 368–377 (1989)
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