scholarly journals Evaluation of Naked Eye Single Tube Red Cell Osmotic Fragility Test (NESTROFT) in Screening and Diagnosis of Beta Thalassaemia Trait in Pakistani Population

2021 ◽  
Keyword(s):  
Screening Test ◽  
Complete Blood Count ◽  
Osmotic Fragility ◽  
Rapid Screening ◽  
Red Cell ◽  
Pakistani Population ◽  
Single Tube ◽  
Beta Thalassaemia ◽  
Naked Eye ◽  
Thalassaemia Trait

Background: Beta thalassaemia is an inherited disease that is a cause of continuous burden on the affected families and the society. The objective of the study was to evaluate the efficacy of Naked Eye Single Tube Red Cell Osmotic Fragility Test (NESTROFT) for the detection of beta thalassaemia trait when used for the screening in Pakistani population. Methods: All participants requesting a complete blood count were included in the study. Informed consent was obtained. Naked Eye Single Tube Red Cell Osmotic Fragility Test was performed with freshly prepared 0.36% buffered saline. Turbidity in the tubes was an indication for individuals to be positive for beta thalassaemia trait. Hemoglobin electrophoresis was performed on all positive cases to confirm the sensitivity and the reliability of the screening test. Chi-Square test was used to test for any significant correlation between the different hematological parameters and other variables. Results: A total of 812 patients were included in the study from January 2017 to June 2017. The mean age of participants was 35.5 + 13.6 years. There were 351 (43.2%) male and 461 (56.7%) female participants. A 100% Naked Eye Single Tube Red Cell Osmotic Fragility Test sensitivity was obtained with 65 (8%) positive cases having HbA2 levels of more than 3.2% indicating their true positivity whereas, all 747 (92%) negative cases having HbA2 levels of less than 3.2% indicating their true negativity. Conclusion: NESTROFT was found and a rapid screening test for the identification of carriers of beta thalassaemia trait in our population.

scholarly journals Role of Naked Eye Single Tube Red Cell Osmotic Fragility Test (NESTROFT) in Detecting Beta-Thalassemia Trait

2018 ◽  
Vol 36 (4) ◽  
pp. 145-152 ◽  
Author(s):  
Asma Ferdousi ◽  
Mainuddin Ahmad ◽  
Jhulan Das Sharma ◽  
Rasheda Samad ◽  
AKM Zafar Ullah
Keyword(s):  
Predictive Value ◽  
Disease Incidence ◽  
Osmotic Fragility ◽  
Beta Thalassemia ◽  
Red Cell ◽  
College Hospital ◽  
Single Tube ◽  
Naked Eye ◽  
Thalassemia Trait

Thalassemia is one of the commonest inherited diseases in Bangladesh. The birth of a thalassemic child places considerable strain, not only on the affected child and its family but also on the community and the nation at large. To reduce the burden of the society and to reduce the disease incidence by providing genetic counseling, detection of carrier is important. The present study evaluates the role of ‘Naked Eye Single Tube Red Cell Osmotic Fragility Test’ (NESTROFT) in detecting ß-thalassemia trait. The current study is a cross sectional study done during the period of September 2008 to August 2009. The study subjects were sibs, parents and relatives of thalassemia patients of age more than 1 year attending Pediatric department of Chittagong Medical College Hospital. Sample size was 50. Here subjects with lowered osmotic fragility test were detected and later on Hb- electrophoresis was done. All the data were recorded and analyzed by SPSS programme. The Sensitivity, Specificity and predictive value of positive and negative tests were computed and they were 92.6%, 80%, 92.6% and 80% respectively. False positive cases were found. The present study found NESTROFT to be both sensitive and reasonably specific and of high negative predictive value. However, multicenter study with large sample is needed to recommend NESTROFT as a single screening test for detection of ß-thalassemia trait.J Bangladesh Coll Phys Surg 2018; 36(4): 145-152

Validity of Naked Eye Single Tube Red Cell Osmotic Fragility Test for the Diagnosis of β-Thalassemia –A Case Control Study

2011 ◽  
Vol 24 (1) ◽  
pp. 1-5 ◽  
Author(s):  
MI Bari ◽  
LS Sharmin ◽  
PK Paul
Keyword(s):  
Negative Predictive Value ◽  
Predictive Value ◽  
Osmotic Fragility ◽  
Red Cell ◽  
College Hospital ◽  
Single Tube ◽  
Medical College ◽  
Naked Eye ◽  
Sensitivity Specificity ◽  
Control Study

This study was conducted at the department of paediatrics, Rajshahi Medical College Hospital over a period of 2 years to see the sensitivity, specificity, positive predictive value and negative predictive value of Naked Eye Single Tube Red cell Osmotic Fragility (NESTROF) test for the diagnosis of β-thalassemia. Fifty eight children with β- thalassemia were taken as case and 58 children were taken as control. Among the control 29 children were normal (without anaemia) and 29 children had anaemia other than β-thalassemia. Hemoglobin electrophoresis was done to all children to enroll them as case or control. Then NESTROF test was performed in all cases and controls. The data was analyzed by SPSS V.12. This study showed that sensitivity, specificity, positive and negative predictive value of NESTROF test was 96.55%, 72.41%, 77.77% and 95.45% respectively. TAJ 2011; 24(1): 1-5

scholarly journals IRON DEFICIENCY AND THALASSAEMIA

2018 ◽  
Vol 25 (12) ◽  
pp. 1863-1868
Author(s):  
Asma Shaikh ◽  
Nadeem Nusrat ◽  
Muhammad Akbar Agha ◽  
Asma Shabbir
Keyword(s):  
Iron Deficiency ◽  
Vitamin B12 ◽  
Mean Corpuscular Volume ◽  
Complete Blood Count ◽  
Vitamin B12 Deficiency ◽  
Reference Laboratory ◽  
Corpuscular Volume ◽  
Beta Thalassaemia ◽  
Thalassaemia Trait ◽  
B12 Deficiency

Objectives: To study the importance of normal or low mean corpuscular volume in vitamin B12 deficiency due to co-existence of iron deficiency or beta thalassaemia trait masking a rise in mean corpuscular volume. Study Design: Observational non-probability cross sectional study. Setting: DDRRL. Period: January 2014 to September 2014. Methods: 105 vitamin B12 deficient cases (vitamin B12 less than 200ng/l) who presented with normal or low mean corpuscular volume (MCV less than 95 fl) on complete blood count (CBC) were determined from Dow diagnostic research and reference laboratory (DDRRL). Serum ferritin, red blood cell folate (RBC Folate) level and Hemoglobin electrophoresis for beta thalassaemiatrait were analysed in these patients. Results: Total of 105 vitamin B12 deficient patients who fulfilled the inclusion criteria were enrolled in this study from which 39 (37.14%) were male and 66 (62.85%) were females. Amongst them 36.19% had microcytosis with the mean age of 37±16.2 years while 63.8% were normocytic with mean age of 41.58±15.65 years. In microcytic group, iron deficiency, beta thalassaemia trait, combined deficiency of B12, iron and beta thalassaemia trait and RBC folate deficient were 52.6%,34.21%, 7.8% and 2.63% respectively. In normocytic group, iron deficiency, beta thalassaemia trait and RBC Folate deficient were 13.4%, 00% and 11.9% respectively. Conclusion: There is a significant coexistent frequency of iron deficiency and beta thalassaemia trait in vitamin B12 deficiency with normal or low MCV especially in females of 20-40 years of age. There should be a high index of suspicion for B12 deficiency when investigating anaemia with normal or altered red cell indices.

scholarly journals Red cell parameters, HbA2 levels, and the best discrimination index in beta thalassaemia trait in Sri Lanka

2021 ◽  
Vol 52 (1) ◽  
pp. 13
Author(s):  
K. H. B. P. Fernandopulle ◽  
H. M. J. P. Herath ◽  
L. D. Udawatta ◽  
P. M. N. K. Senarathna
Keyword(s):  
Sri Lanka ◽  
Discrimination Index ◽  
Red Cell ◽  
Cell Parameters ◽  
Beta Thalassaemia ◽  
Thalassaemia Trait

scholarly journals A Screening Test for Iron Deficiency Anaemia and Thalassaemia Traits

2015 ◽  
Vol 32 (4) ◽  
pp. 190-193
Author(s):  
Amin Lutful Kabir ◽  
Tashmim Farhana Dipta ◽  
Hajera Khatun ◽  
Mohammad Hafizur Rahman ◽  
Mahfuz Haq ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Predictive Value ◽  
Iron Deficiency Anaemia ◽  
Osmotic Fragility ◽  
Red Cell ◽  
Deficiency Anaemia ◽  
Final Study ◽  
Thalassaemia Trait ◽  
Study Population

Both iron deficiency and thalassaemia trait can present with hypochromic microcytic morphology. Naked eye single tube red cell osmotic fragility (NESTROF) is an inexpensive and simple test which can effectively differentiate iron deficiency anaemia from thalassaemia trait. Our study was an opportunity to observe the role of NESTROF in screening of thalassaemia trait among our study population. Initially NESTROF was carried out in 677 patients (N) population of four groups having both positive and negative NESTORF; for economical issue, auto-analyzer study and haemoglobin electrophoresis were done among only 100 randomly selected subjects, who were finally included in our study as final study population (n). In our study, NESTROF was 94.23% sensitive and its specificity was 92.08%. The predictive value of a positive test was 88.13% and predictive value of a negative test was 96.24%. Our study showed, NESTROF can effectively differentiate iron deficiency anaemia (IDA) from thalassaemia trait but, is not effective in co-existent IDA and thalassaemia.J Bangladesh Coll Phys Surg 2014; 32: 190-193

scholarly journals Experience with NESTROFT for screening for thalassemia trait/ minor: evaluation against CBC and HPLC in a high prevalence region in Saurashtra, Gujarat, India

2020 ◽  
Vol 8 (3) ◽  
pp. 1108
Author(s):  
Varsha P. Sorathiya ◽  
Nishith A. Vachhani ◽  
Sanjeev L. Nandani ◽  
Daya J. Vekariya ◽  
Heena N. Kashiyani ◽  
...  
Keyword(s):  
High Performance ◽  
Complete Blood Count ◽  
Osmotic Fragility ◽  
Cost Effective ◽  
Red Cell ◽  
Simple Method ◽  
High Prevalence ◽  
Prevention Programmes ◽  
Red Cell Indices ◽  
Thalassemia Trait

Background: Hemoglobinopathies pose a significant health burden in India. Prevention programmes can significantly reduce this burden. Although sophisticated methods of screening for β thalassemia trait are available, a cheap and simple method is beneficial for population screening. Although the Naked Eye Single Tube Red Cell Osmotic Fragility Test (NESTROFT) has been evaluated in many studies, sample sizes were small in some and many earlier studies have not done complete blood count (CBC) and High-Performance Liquid Chromatography (HPLC) in all the cases. We evaluate the suitability of NESTROFT for detection of β-thalassemia trait in a high prevalence region in Saurashtra, Gujarat.Methods: Here, 1000 unrelated individuals were studied. NESTROFT, CBC and estimation of HbA2 and HbF or other hemoglobin variants were done by HPLC.Results: Prevalence of β thalassemia trait was 7.8% in this population. NESTROFT showed an overall sensitivity and specificity of 94.87 and 85.38 respectively for the detection of β thalassaemia trait. Using red cell indices (MCH <27 pg and MCV <80 fl), One β thalassemia trait with normal indices would have been missed. Among twelve individuals with other hemoglobinopathies (HbS, HbD, HbE, δβ thalassemia trait or HPFH), seven had a positive NESTROFT while three had normal MCV & MCH values.Conclusions: NESTROFT is a cost-effective sensitive test which does not require any equipment and can be done in remote areas. It remains a useful first line screening test when large populations have to be screened. 

scholarly journals Thalassaemia genes in Baghdad, Iraq

2021 ◽  
Vol 2 (2) ◽  
pp. 315-319
Author(s):  
Hassan I. Yahya ◽  
Khalid J. Khalel ◽  
Nasir A. S. Al AlIawi ◽  
Ferial Helmi
Keyword(s):  
Maternity Care ◽  
Screening Test ◽  
Mean Corpuscular Volume ◽  
Corpuscular Volume ◽  
Prevalence Rates ◽  
Care Clinic ◽  
Beta Thalassaemia ◽  
Thalassaemia Trait ◽  
Alpha Thalassaemia ◽  
The City

To estimate the prevalence of thalassaemia genes in Baghdad, a study was made of 502 randomly selected pregnant women attending a major maternity care clinic in the city. A reduced mean corpuscular volume [MCV] of < 80 fl was used as a screening test for thalassaemia in this population, followed by a battery of tests, including haemoglobin analysis and iron studies, to confirm the diagnosis. Using this approach, 22 cases were diagnosed of beta-thalassaemia trait, five cases of alpha-thalassaemia trait and one case of delta beta-thalassaemia trait. Based on these figures the estimated prevalence rates of beta-, alpha- and delta beta-thalassaemia traits in Baghdad, would be 4.4%, 1.0% and 0.2%, respectively. The study also includes a discussion of the above findings in the context of those reported in other neighbouring countries

Evaluation of single-tube osmotic fragility as a screening test for thalassemia

2005 ◽  
Vol 79 (3) ◽  
pp. 198-201 ◽  
Author(s):  
Jason Chow ◽  
Lorraine Phelan ◽  
Barbara J. Bain
Keyword(s):  
Screening Test ◽  
Osmotic Fragility ◽  
Single Tube
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