Effect of blood transfusion on serum iron and transferrin saturation.
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The effect of transfusion of packed red blood cells on serum iron level, total iron-binding capacity, and transferrin saturation was studied. Samples of blood from 37 hemodynamically stable patients were obtained for analysis at various intervals following the transfusion of packed red blood cells. In 10 patients with possible iron deficiency, a significant rise in serum iron level and transferrin saturation occurred during the 24 hours following transfusion, which persisted at a marginally significant level up to 36 hours. In the remaining 27 patients, a significant rise was also noted in serum iron level and transferrin saturation results, but the rise did not persist beyond the 24 hours after transfusion. No change in total iron-binding capacity was noted in either group. These data show that the diagnosis of iron deficiency (based on a transferrin saturation of < 0.16) might be missed if iron studies are performed on patients within 24 hours following packed red blood cell transfusion. Therefore, if serum iron studies are obtained for patients suspected of having iron deficiency anemia, these studies are best done on blood samples obtained before blood transfusion.Keywords:
Transferrin saturation
Total iron-binding capacity
Saturation (graph theory)
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Transferrin saturation
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Total iron-binding capacity
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Background: Dietary requirement for iron is negligible and iron deficiency is very unlikely unless there is inadequate intake, utilization, absorption or excessive loss of blood. Iron status however differs from population to population depending upon a number of factors. Iron deficiency anemia occurs at a stage when iron stores are absolutely finished. This study was done to look for magnitude of iron deficiency through various parameters of iron deficiency' in the subjects diagnosed to have iron deficiency anemia in Qatary adults. Methods: Among patients visiting outpatient departments of Hamad Medical Corporation, Qatar in the year 1993-1994, 108 were diagnosed for iron-deficiency anemia. Serum Iron, TIBC and transferrin saturation were done to look for exact status of iron deficiency'. Results: Out of 108, 24% were males and 76% females. In these patient’s serum iron (21.73 pg/dl) and transferrin saturation (6.96%) was low while the total iron binding capacity' (TIBC) was within normal range. In male’s iron (20.73 pg/dl) and transferrin saturation (5.68%) was comparatively lower than females having iron 24.41 (µg/dl and transferrin saturation 7.36 % respectively
Transferrin saturation
Total iron-binding capacity
Outpatient clinic
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Dose
Malondialdehyde
Total iron-binding capacity
Transferrin saturation
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We compared the ability of soluble serum transferrin receptor (TfR) concentration, quantified using the R&D Systems (Minneapolis, MN) enzyme-linked immunosorbent TfR assay, with other, more traditional indicators of iron status (total iron binding capacity [TIBC], mean corpuscular volume [MCV], percent transferrin saturation [%TS], RBC distribution width [RDW], and serum iron concentration [SIC]) for discriminating between patients with iron deficiency anemia (IDA) or anemia of chronic disease (ACD). The TfR concentration was determined in 72 serum samples selected from men and nonpregnant women classified biochemically on the basis of ferritin concentration as having IDA (n = 41) or ACD (n = 31). By using receiver operating characteristic curve analysis, the diagnostic accuracy of the various indicators of iron status that we evaluated for discriminating between IDA and ACD decreased in the following order: TIBC > TfR > MCV > (%TS = RDW) > SIC. There was no significant difference between the diagnostic accuracy of TIBC and TfR. Thus, the routine measurement of TfR offers no advantage over TIBC for discriminating between people with biochemically defined IDA or ACD.
Total iron-binding capacity
Transferrin saturation
Soluble transferrin receptor
Transferrin receptor
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None of the methods for assessing total body iron burden in patients with hemochromatosis is satisfactory. Although it is commonly believed that a relationship exists between serum ferritin levels and total iron burden, the extent of this relationship has not previously been documented. In the present investigation we measured the total body iron burden of 88 patients with putative hemochromatosis, 54 of whom were homozygotes for the 845G→A (C282Y) mutation. The total body iron stores were estimated from the volume of red cells removed during therapeutic phlebotomy corrected for an estimated 2 mg/day dietary iron absorbed during the phlebotomy period; the amount of storage iron was compared to the serum ferritin, serum iron, unsaturated iron binding capacity, and transferrin saturation before the beginning of phlebotomy. The serum ferritin proved to be the best predictor of body iron stores. The correlation between all of the analytes and the body iron burden was greater in patients homozygous for the C282Y mutation than in those who were not, including the compound heterozygotes for C282Y and H63D. The body iron burden tended to be greater in patients homozygous for the C282Y mutation than the other patients at any other given ferritin level. We conclude that the serum ferritin level does provide some information regarding total iron burden but even in the case of C282Y homozygotes, the correlation is not very strong.
Phlebotomy
Transferrin saturation
Total iron-binding capacity
Hereditary hemochromatosis
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The effect of transfusion of packed red blood cells on serum iron level, total iron-binding capacity, and transferrin saturation was studied. Samples of blood from 37 hemodynamically stable patients were obtained for analysis at various intervals following the transfusion of packed red blood cells. In 10 patients with possible iron deficiency, a significant rise in serum iron level and transferrin saturation occurred during the 24 hours following transfusion, which persisted at a marginally significant level up to 36 hours. In the remaining 27 patients, a significant rise was also noted in serum iron level and transferrin saturation results, but the rise did not persist beyond the 24 hours after transfusion. No change in total iron-binding capacity was noted in either group. These data show that the diagnosis of iron deficiency (based on a transferrin saturation of < 0.16) might be missed if iron studies are performed on patients within 24 hours following packed red blood cell transfusion. Therefore, if serum iron studies are obtained for patients suspected of having iron deficiency anemia, these studies are best done on blood samples obtained before blood transfusion.
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Total iron-binding capacity
Saturation (graph theory)
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Microcytic hypochromic anemia is one of the commonest hematological abnormalities in Bangladeshi population. Iron deficiency anemia and beta thalassemia traits are the most frequent causes of microcytic hypochromic anemia which are sometimes difficult to differentiate clinically and by routine laboratory examinations due to similar blood picture. To differentiate between patients of beta thalassemia trait and iron deficiency anemia, physicians need a group of investigations including peripheral blood film, estimation of HbA2, serum ferritin, serum iron, total iron binding capacity and transferrin saturation. But these tests are relatively expensive, time consuming and need sophisticated techniques. The aim of this study was to evaluate the pattern of red cell count and RDW-CV (%) in beta thalassemia trait in adults and thereby determine the role of these parameters in differentiation between patients of beta thalassemia trait and iron deficiency anaemia. In this study 50 confirmed cases of beta thalassemia trait aged 18 to 60 years, both male and female were included as cases and 50 age- and sex-matched iron deficiency subjects were included as control. RBC count and RDW-CV (%) were measured by an electronic cell counter device. The present study revealed that RBC count was higher in patients with beta thalassemia trait than that in iron deficiency anemia and RDW-CV(%) was significantly higher in patients with iron deficiency anemia than that in beta thalassemia trait.Bangladesh J Med Biochem 2016; 9(1): 31-35
Transferrin saturation
Beta thalassemia
Microcytic anemia
Sickle cell trait
Complete blood count
Total iron-binding capacity
Red Cell
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Background Anemia of chronic disease (ACD) is commonly found in patients with chronic inflammation or infection. By examining soluble transferrin receptor or bone marrow iron, ACD was found in 80% of anemic adult tuberculosis (TB) patients. Iron profile, another tool to differentiate ACD from iron deficiency anemia (IDA), is both less expensive and less invasive. Few studies have been reported on iron profiles of anemic children with TB in Indonesia.Objective We aimed to use iron profiles to determine the proportion of ACD in anemic children with tuberculosis.Methods A cross-sectional study on anemic children with TB who came to Cipto Mangunkusumo Hospital and Tebet Puskesmas (community health center) was performed in September-November 2010. Iron profiles included the measurements of serum iron (SI), total iron binding capacity (TIBC), transferrin saturation (TF), and serum ferritin (SF).Results Our study comprised of 66 subjects, with a median age of 3.8 years (6 months–18 years). Most subjects had normal SI (85%), normal TIBC (71%), low transferrin saturation (51%), and normal SF (71%). Only 10 children had iron homeostasis disorder and 6 of these were diagnosed as having ACD. Thus, iron profiles failed to prove that iron metabolism was disturbed. The profile of children with organ-specific TB was more consistent with ACD compared to the profile of childhood TB. [SI 29.1 (11-83) vs 44 (10-151) μg/dL; TIBC 239.3 (100.80) vs 299.0 (58.51) μg/dL; TF 18.3 (4-100) vs 15 (1-53) %; and SF 154 (34.9-655) vs 36.1 (2.5-213.4) μg/L].Conclusion The proportion of ACD (9%) diagnosed by using iron profiles was not as high as previously reported. Further research using newer techniques is needed to detect ACD in anemic children with TB. [
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The predictive value positive of serum iron studies and erythrocyte indices in differentiating between iron deficiency anemia and the anemia of chronic disease (ACD) were determined in 82 hospitalized patients with an iron-binding saturation of 15 percent or less. Iron deficiency, determined by serum ferritin of 20 ng/mL or less, was present in only 31 percent of patients with a serum iron level of 10 micrograms/dL or less; 39 percent of patients with a transferrin saturation of 5 percent or less, and 54 percent of patients with a total iron-binding capacity (TIBC) of 350 micrograms/dL or greater; conversely, iron deficiency was present in only 3 percent of patients with a TIBC of 250 micrograms/dL or less. Iron deficiency was present in 83 percent of patients with a mean corpuscular volume (MCV) of 75 microns3 or less, but only 2 percent of patients with an MCV of 86 microns3 or greater. It is concluded that the MCV has strong predictive value positive (and negative) when below (or above) the values just cited, but that serum iron studies do not have sufficient predictive value to justify their use in the routine differentiation between iron deficiency anemia and the ACD in hospitalized patients when no other cause for anemia is likely.
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In inflammatory diseases, classical parameters of iron status (serum iron, serum ferritin, total iron-binding capacity of transferrin and transferrin saturation) are not very reliable.The purpose of this study is to investigate soluble transferrin receptor, its index and classical parameters of iron status [serum iron, serum ferritin, total iron-binding capacity of transferrin and transferrin saturation] during iron-deficiency anemia and combined iron deficiency and inflammatory anemia.Our study concerned 24 patients: 18 patients with iron-deficiency anemia and 6 patients with combined iron-deficiency and inflammatory anemia. 55 healthy subjects were included as controls. Both groups underwent classical parameters of iron status [serum iron, serum ferritin, total iron-binding capacity of transferrin and transferrin saturation] and measurement of soluble transferrin receptor with its index.In iron-deficiency anemia, total iron-binding capacity of transferrin, soluble transferrin receptor and its index were enhanced, whereas serum iron, ferritinemia and transferrin saturation were low compared to controls. Compared to patients with iron-deficiency anemia, those with combined iron-deficiency and inflammatory anemia showed higher levels of serum iron and ferritinemia. In contrast, soluble transferrin receptor and its index did not vary significantly between both groups.Our findings show the interest of soluble transferrin receptor and its index in the detection of iron deficiency during anemia of inflammatory states.
Transferrin saturation
Soluble transferrin receptor
Transferrin receptor
Total iron-binding capacity
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