scholarly journals Chitinase-3-like protein 1: reference interval of a healthy population and its diagnostic value for liver fibrosis in Pakistan

BioMedica ◽  
2021 ◽  
Vol 37 (3) ◽  
pp. 1-13
Author(s):  
Faryal Husnain ◽  
Muhammad Dilawar Khan ◽  
Omar Rasheed Chughtai ◽  
Akhtar Rasheed Chughtai ◽  
Shakeel Ashraf ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Hepatic Fibrosis ◽  
Reference Interval ◽  
Diagnostic Value ◽  
Reference Intervals ◽  
Enzyme Linked Immunosorbent Assay ◽  
Healthy Population ◽  
International Studies ◽  
Cross Sectional ◽  
Pakistani Population

<p><strong>Background and Objective:</strong> Chitinase-3-like protein 1 (CHI3L1) is an upcoming biomarker for the diagnosis of liver fibrosis. The reference intervals (RIs) for CHI3L1 have not been established in the Pakistani population. Thus, this study aimed to determine the RIs in our population and the cut-off value for diagnosis of hepatic fibrosis.</p> <p><strong>Methods:</strong> This is a cross-sectional study. A total of 408 participants (202 healthy and 206 diagnosed liver fibrosis cases) were recruited. Serum CHI3L1 level was measured on CHI3L1 kits (Proprium Biotech Co. Ltd) by manual enzyme-linked immunosorbent assay. The RIs were estimated by percentile and working normal method.</p> <p><strong>Results:</strong> The distribution of CHI3L1 values showed no remarkable variation with gender and age. The 95% RI of CHI3L1 was 12.80-81.80 ng/ ml in healthy Pakistani subjects and the cut-off for the diagnosis was 102.12 ng/ml in hepatic fibrosis cases.</p> <p><strong>Conclusion:</strong> The RIs in healthy adults and the cut-off for the diagnosis of hepatic fibrosis of serum CHI3L1 were determined in a selective adult Pakistani population. This will be a useful reference for further local and international studies.</p>

Analytical quality specifications for common reference intervals

2004 ◽  
Vol 42 (7) ◽  
Author(s):  
Carmen Ricós ◽  
Maria Vicenta Doménech ◽  
Carmen Perich
Keyword(s):  
Real Life ◽  
Reference Interval ◽  
Population Based ◽  
Reference Intervals ◽  
Healthy Population ◽  
Analytical Quality ◽  
Related Factors ◽  
Cross Sectional ◽  
Reference Change Value ◽  
Quality Specifications

AbstractInterpretation oflaboratory test results requires comparison to some type of reference value or reference interval. These comparisons can be cross-sectional (population-based reference interval and cut-off values) or longitudinal (reference change value). Quality specifications for cross-sectional comparison have been established by determining the influence of analytical bias and imprecision on the percentage ofthe healthy population falling outside the reference limits, when sharing population-based reference intervals in a Gaussian distribution ofresults. Quality specifications for longitudinal comparisons are equally important and are often overlooked, since less work has been done in this area. Some criteria suggest that a difference between consecutive results designates a true change in a patient health status when the difference is higher than the within-subject biological variation plus the within-laboratory analytical variation. In this chapter we discuss the clinical considerations and laboratory-related factors that must be considered when quality specifications are applied to sharing reference comparisons. Real life experience shows that different analytical methods can produce comparable results when common quality goals are established, and quality can be achieved through a willingness to work together. Within the existing organization, the current specifications for analytical quality and a dedication to quality health care makes it possible to achieve transferability between laboratories within a geographic area.

scholarly journals Establishment of Hematological Reference intervals for healthy Children in Elobied City, Sudan

2021 ◽  
Vol 2 (4) ◽  
pp. 24-31
Author(s):  
Tarig Osman Khalafallah Ahmed ◽  
Malaz Elfatih Abd-elkareem Ahmed ◽  
Ream Elzain Abdelgadir ◽  
Hiba Awadelkareem Osman Fadl ◽  
Assad MA. Babker
Keyword(s):  
Blood Cells ◽  
Hematological Parameters ◽  
Venous Blood ◽  
White Blood Cells ◽  
Reference Interval ◽  
Cross Sectional Study ◽  
Reference Intervals ◽  
Healthy Population ◽  
Healthy Children ◽  
Cross Sectional

Hemogram Reference intervals are established since a healthy population is critical to accurately interpret laboratory tests, which include Hemoglobin estimation, Red blood cells count and indices, White blood cells count and differential in addition to Platelets count. This study aims to establish the reference interval of the complete hemogram amongst healthy Sudanese children in Elobied city, Sudan. A descriptive cross-sectional study  included 354 healthy children, aged between 3 to 17 years, who were categorized into three groups according to age. A questionnaire was fulfilled, EDTA anti-coagulated venous blood sample was collected from each child then the complete hemogram was performed automated hematological analyzer (Sysmex Xp 300), Finally, Data was analyzed by a software program (SPSS version 21). The hematological reference intervals for healthy children [Hb g/dl, HCT%, RBCs count x106μL, MCV/fL ,MCH /pg., MCHC g/dl ,WBCs count x10³/μL, Neutrophil count%, Eosinophil count %, Basophile count %, lymphocyte count ,Monocytes count%, RDW CV and PLTs count×10³/μL] are [(12.4±1.2),(37±4),(5.0 ±0.4), (82±5.0), (26±3.0), (32±3.0) ,(7.0±2.0) (47±10), (1±0.1) ,(0±0),(45± 10),(7 ± 4), (13±1.8) &(227±91)] respectively. The hematological RI for healthy children in Elobied was established in this study to be representative of this population, there was a significant gender-based difference in all the evaluated hematological parameters, they were found to be higher in males than in females except for basophil (%). Finally, the results of this study would shed a light on the importance of establishing RI for the children population in Elobied.

scholarly journals The Association between Decreased Kidney Function and FIB-4 Index Value, as Indirect Liver Fibrosis Indicator, in Middle-Aged and Older Subjects

2021 ◽  
Vol 18 (13) ◽  
pp. 6980
Author(s):  
Kazuko Kotoku ◽  
Ryoma Michishita ◽  
Takuro Matsuda ◽  
Shotaro Kawakami ◽  
Natsumi Morito ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Kidney Function ◽  
Survival Curve ◽  
Cross Sectional Study ◽  
Trend Test ◽  
Healthy Population ◽  
Middle Aged ◽  
Cross Sectional ◽  
Ckd Stage ◽  
Older Subjects

Liver fibrosis might be linked to the prevalence of chronic kidney disease (CKD). However, there is little information about the association between liver fibrosis and decreased kidney function in middle-aged and older subjects. We aimed to evaluate the influence of liver fibrosis on the incidence or prevalence of CKD stage 3–5 in a retrospective cross-sectional study (Study 1, n = 806) and a 6-year longitudinal study (Study 2, n = 380) of middle-aged and older subjects. We evaluated liver fibrosis using the Fibrosis-4 (FIB-4) index and kidney function using the estimated glomerular filtration rate (eGFR) of all subjects. All subjects were divided into four groups on the basis of their FIB-4 score quartiles (low to high). In the Jonckheere–Terpstra trend test of Study 1, the eGFR decreased significantly from the lowest group to the highest group (p < 0.001). The Kaplan–Meier survival curve in Study 2 showed that the cumulative prevalence of CKD stage 3–5 was higher in the third quartile than the other quartiles. Our results suggest that liver fibrosis could be a useful indicator for the prevalence of CKD, even within a relatively healthy population, although liver fibrosis was not an independent risk factor.

scholarly journals The diagnostic value of non-invasive serum liver fibrosis indices in the prediction of portal hypertension in cirrhotic patients: a cross-sectional study

2020 ◽  
Vol 8 (1) ◽  
pp. 23-23
Author(s):  
Masood Faghih Dinevari ◽  
Mohammad Hossein Somi ◽  
Mohammad Kazem Tarzamni ◽  
Leila Alizadeh ◽  
Samaneh Abbasian ◽  
...  
Keyword(s):  
Portal Hypertension ◽  
Liver Fibrosis ◽  
Color Doppler ◽  
Area Under The Curve ◽  
Predictive Marker ◽  
Diagnostic Value ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Non Invasive ◽  
Cirrhotic Patients

Introduction: Considering that portal hypertension is principally caused by hepatic fibrosis, some studies postulated the predictive value of serum liver fibrosis indices in the diagnosis of portal hypertension. In this study we assessed the prognostic value of serum indices in the diagnosis of portal hypertension in cirrhotic patients. Methods: One hundred two cirrhotic patients were selected according to inclusion/exclusion criteria. Cirrhosis and the Child-Pugh score was determined by the gastroenterologist. Portal hypertension was diagnosed by the radiologist using the color Doppler method. The fasting blood sample was drawn and different serum indices were determined. The following indices were calculated: FIB4, Fibroindex, APRI, FORNS, LOK. Results: The patients mean age was 54.39±6.60 years. About 52.94% of the patients were women. The mean liver enzymes level was higher in patients with portal hypertension. In 50.98% of patients, the etiology of cirrhosis was viral hepatitis. Significant differences was observed between the two groups regarding the studied indices (P<0.05). According to the results of the ROC curve, the FORNS index was a better predictive marker of portal hypertension in cirrhotic patients. The maximum AUC (area under the curve) was for the FORNS index. According to the results of diagnostic tests, the FORNS index had adequate sensitivity and specificity in the diagnosis of portal hypertension with the cut-off value of 8.51. Conclusion: The results of the present study showed that the FORNS index is a better predictor of portal hypertension in cirrhotic patients.

scholarly journals Establishment of Normal Reference Intervals for CD3+, CD4+, CD8+, and CD4+to CD8+Ratio of T Lymphocytes in HIV Negative Adults from University of Gondar Hospital, North West Ethiopia

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Addisu Gize ◽  
Biniam Mathewos ◽  
Beyene Moges ◽  
Meseret Workineh ◽  
Lealem Gedefaw
Keyword(s):  
T Lymphocytes ◽  
T Lymphocyte ◽  
Lymphocyte Subsets ◽  
Reference Interval ◽  
Reference Intervals ◽  
University Hospital ◽  
T Lymphocyte Subsets ◽  
Cross Sectional ◽  
North West ◽  
Normal Reference

Background.Reference values for the CD3+, CD4+, CD8+, and CD4+to CD8+ratio T lymphocyte subsets are adopted from textbooks. But for appropriate diagnosis, treatment, and follow-up of patients, correct interpretations of the laboratory results from normal reference interval are mandatory. This study was, therefore, planned to establish normal reference interval for T lymphocytes subset count and CD4+to CD8+ratio.Methods.A cross-sectional study was conducted on apparently healthy adult individuals who visited voluntary counseling and HIV testing clinic Gondar University Hospital from April to May, 2013. Whole blood was analyzed using fluorescence-activated cell sorting (BD FACS, San Jose, CA) machine to enumerate the T-cell subpopulations.Results.Out of the total 320 study participants, 161 (50.3%) were men and 159 (49.7%) were women. The normal reference intervals were (655–2,823 cells/μL), (321–1,389 cells/μL), and (220–1,664 cells/μL) for CD3+, CD4+, and CD8+T lymphocyte subsets, respectively, and CD4+to CD8+ratio was 0.5–2.5.Conclusion.The overall CD3+T lymphocytes reference interval in the current study was wide; low CD4+T lymphocytes, CD4 to CD8 ratio, and high CD8+T lymphocytes values were observed.

scholarly journals Diagnostic Value of the13C Methacetin Breath Test in Various Stages of Chronic Liver Disease

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Hamizah Razlan ◽  
Nurhayaty Muhamad Marzuki ◽  
Mei-Ling Sharon Tai ◽  
Azhar-Shah Shamsul ◽  
Tze-Zen Ong ◽  
...  
Keyword(s):  
Liver Disease ◽  
Liver Fibrosis ◽  
Positive Predictive Value ◽  
Predictive Value ◽  
Breath Test ◽  
Area Under The Curve ◽  
Diagnostic Value ◽  
Cross Sectional Study ◽  
Chronic Liver ◽  
Cross Sectional

The accuracy of the13C-methacetin breath test (13C-MBT) in differentiating between various stages of liver disease is not clear. A cross-sectional study of Asian patients was conducted to examine the predictive value of the13C-MBT in various stages of chronic liver diseases. Diagnostic accuracy of the breath test was determined by sensitivity, specificity, positive predictive value, negative predictive value, and area under the curve analysis. Seventy-seven patients (47 men/30 women, mean age50±16years) were recruited. Forty-seven patients had liver cirrhosis (Child Pugh A = 11, Child Pugh B = 15, and Child Pugh C = 21), 21 had fibrosis, and 9 had chronic inflammation. The sensitivity and positive predictive value for liver fibrosis, cirrhosis (all stages), Child-Pugh A, Child-Pugh B, and Child-Pugh C were 65% and 56%, 89% and 89%, 67% and 42%, 40% and 40%, and 50% and 77%, respectively. Area under curve values for fibrosis was 0.62 (0.39–0.86), whilst that for cirrhosis (all stages) was 0.95 (0.91–0.99). The13C-methacetin breath test has a poor predictive value for liver fibrosis but accurately determines advanced cirrhosis.

scholarly journals Hematological Profile in the Saudi Population: Reference Intervals By Gender, Age and Regions

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5804-5804
Author(s):  
Ahmed Alaskar ◽  
Hina Rehan ◽  
May Anne Mendoza ◽  
Aljowhara Alsahan ◽  
Anita Immanuel ◽  
...  
Keyword(s):  
Robust Regression ◽  
Conflicts Of Interest ◽  
Cross Sectional Study ◽  
Reference Intervals ◽  
International Studies ◽  
Reference Ranges ◽  
Saudi Population ◽  
Cross Sectional ◽  
Hematological Indices ◽  
Geographical Regions

Background: Although the prevalence of genetic hematological disorders varies widely between geographical regions, region-specific hematological reference ranges have not been defined in Saudi Arabian adults. Methods: A multicenter retrospective cross-sectional study was conducted with 1127 participants who completed their pre-employment screening and recruitment process between January 2013 and December 2016. Data related to the demographic and hematological indices were extracted. Results: The mean age was 28.0±5.2 years (range 19.4-72.8 years) and gender was distributed equally (47.5% female vs. 52.5% male). The WBC reference range was 3.3-11.4 ×109/L; hemoglobin 111-174 gm/l; platelet 163-412 ×109/L; MCV 80-95.7 fl, and neutrophils 1.2-8.8 ×109/L. A robust regression model was used to evaluate the effect of the participant's characteristics on the hematological indices. Except for WBC, the rest of the hematological indices were significantly influenced by gender, region, and age. The 2.5 percentile hemoglobin values were 135 gm/L in males and 104 gm/L in females, while platelet values were 173 x109/L in females and 159 x109/L in males. Conclusion: The study defined local hematological reference ranges, which were mostly lower than reported in international studies used in our center. Hematological values were mainly influenced by gender and region. A community nationwide screening study is required to create reference ranges specifically for the Saudi population. Disclosures No relevant conflicts of interest to declare.

scholarly journals A prospective, cross-sectional study to establish age-specific reference intervals for neonates and children in the setting of clinical biochemistry, immunology and haematology: the HAPPI Kids study protocol

BMJ Open ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. e025897 ◽  
Author(s):  
Monsurul Hoq ◽  
Vicky Karlaftis ◽  
Susan Mathews ◽  
Janet Burgess ◽  
Susan M Donath ◽  
...  
Keyword(s):  
Study Protocol ◽  
Clinical Care ◽  
Reference Interval ◽  
Cross Sectional Study ◽  
Reference Intervals ◽  
Clinical Samples ◽  
Sectional Study ◽  
Cross Sectional ◽  
Blood Samples ◽  
Age Appropriate

IntroductionThe clinical interpretation of laboratory tests is reliant on reference intervals. However, the accuracy of a reference interval is dependent on the selected reference population, and in paediatrics, the ability of the reference interval to reflect changes associated with growth and age, as well as sex and ethnicity. Differences in reagent formulations, methodologies and analysers can also impact on a reference interval. To date, no direct comparison of reference intervals for common analytes using different analysers in children has been published. The Harmonising Age Pathology Parameters in Kids (HAPPI Kids) study aims to establish age-appropriate reference intervals for commonly used analytes in the routine clinical care of neonates and children, and to determine the feasibility of paediatric reference interval harmonisation by comparing age-appropriate reference intervals in different analysers for multiple analytes.Methods and analysisThe HAPPI Kids study is a prospective cross-sectional study, collecting paediatric blood samples for analysis of commonly requested biochemical, immunological and haematological tests. Venous blood samples are collected from healthy premature neonates (32–36 weeks of gestation), term neonates (from birth to a maximum of 72 hours postbirth) and children aged 30 days to ≤18 years (undergoing minor day surgical procedures). Blood samples are processed according to standard laboratory procedures and, if not processed immediately, stored at –80°C. A minimum of 20 samples is analysed for every analyte for neonates and then each year of age until 18 years. Analytical testing is performed according to the standard operating procedures used for clinical samples. Where possible, sample aliquots from the same patients are analysed for an analyte across multiple commercially available analysers.Ethics and disseminationThe study protocol was approved by The Royal Children’s Hospital, Melbourne, Ethics in Human Research Committee (34183 A). The study findings will be published in peer-reviewed journals and shared with clinicians, laboratory scientists and laboratories.

scholarly journals Testicular Ultrasound to Stratify Hormone References in a Cross-Sectional Norwegian Study of Male Puberty

2019 ◽  
Vol 105 (6) ◽  
pp. 1888-1898 ◽  
Author(s):  
André Madsen ◽  
Ninnie B Oehme ◽  
Mathieu Roelants ◽  
Ingvild S Bruserud ◽  
Geir Egil Eide ◽  
...  
Keyword(s):  
Serum Testosterone ◽  
Diagnostic Value ◽  
Reference Intervals ◽  
Sex Hormone Binding Globulin ◽  
Clinical Variable ◽  
Chronological Age ◽  
Total Testosterone ◽  
Serum Samples ◽  
Cross Sectional ◽  
Male Puberty

Abstract Context Testicular growth represents the best clinical variable to evaluate male puberty, but current pediatric hormone references are based on chronological age and subjective assessments of discrete puberty development stages. Determination of testicular volume (TV) by ultrasound provides a novel approach to assess puberty progression and stratify hormone reference intervals. Objective The objective of this article is to establish references for serum testosterone and key hormones of the male pituitary-gonadal signaling pathway in relation to TV determined by ultrasound. Design, Setting, and Participants Blood samples from 414 healthy Norwegian boys between ages 6 and 16 years were included from the cross-sectional “Bergen Growth Study 2.” Participants underwent testicular ultrasound and clinical assessments, and serum samples were analyzed by liquid chromatography tandem–mass spectrometry and immunoassays. Main Outcome Measures We present references for circulating levels of total testosterone, luteinizing hormone, follicle-stimulating hormone, and sex hormone–binding globulin in relation to TV, chronological age, and Tanner pubic hair stages. Results In pubertal boys, TV accounted for more variance in serum testosterone levels than chronological age (Spearman r = 0.753, P &lt; .001 vs r = 0.692, P &lt; .001, respectively). Continuous centile references demonstrate the association between TV and hormone levels during puberty. Hormone reference intervals were stratified by TV during the pubertal transition. Conclusions Objective ultrasound assessments of TV and stratification of hormone references increase the diagnostic value of traditional references based on chronological age or subjective staging of male puberty.

Establishment of trimester-specific thyroid stimulating hormone and free thyroxine reference interval in pregnant Chinese women using the Beckman Coulter UniCel™ DxI 600

2015 ◽  
Vol 53 (9) ◽  
Author(s):  
Jing Zhang ◽  
Wei Li ◽  
Qiao-Bin Chen ◽  
Li-Yi Liu ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Chinese Women ◽  
Reference Interval ◽  
Reference Intervals ◽  
Thyroid Stimulating Hormone ◽  
Free Thyroxine ◽  
Specific Reference ◽  
Thyroid Peroxidase ◽  
Cross Sectional ◽  
Reported Data ◽  
Stimulating Hormone

AbstractThyroid-stimulating hormone (TSH) and free thyroxine (FT4) reference intervals are essential for screening and diagnosing thyroid dysfunction during pregnancy. The aim of this study was to establish method- and trimester-specific TSH and FT4 reference intervals in pregnant Chinese women using the Beckman Coulter UniCel™ DxI 600.A cross-sectional dataset analysis was performed. A total of 3507 participants were recruited, and 2743 were eligible for analysis to set reference intervals. TSH, FT4, and thyroid peroxidase antibody (TPOAb) levels were analyzed with the Beckman Coulter UniCel™ DxI 600 AccessThe calculated reference intervals for the first, second, and third trimesters were TSH: 0.06–3.13, 0.07–4.13 and 0.15–5.02 mIU/L, respectively, and FT4: 8.72–15.22, 7.10–13.55 and 6.16–12.03 pmol/L, respectively.Our reference intervals for TSH and FT4 are distinct from the ranges reported in the DxI 600 instruction manual and previously reported data, confirming the importance of method-specific reference intervals.

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