scholarly journals EFFECT OF PREANALYTICAL VARIABLES ON SERUM THYROID STIMULATING HORMONE ANALYSIS BY CHEMILUMINESCENCE METHOD

2021 ◽  
Vol 71 (Suppl-1) ◽  
pp. S102-05
Author(s):  
Ambreen Rehman ◽  
Naveed Asif ◽  
Saima Shakeel Malik ◽  
Waqas Sheikh ◽  
Quratulain . ◽  
...  
Keyword(s):  
Venous Blood ◽  
Armed Forces ◽  
Epidemiological Studies ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
P Value ◽  
Cross Sectional ◽  
Specimen Handling ◽  
Tsh Levels ◽  
Stimulating Hormone

Objective: To identify effect of pre-analytical variables on serum thyroid stimulating hormone. Study Design: Cross sectional study. Place and Duration of Study: Armed Forces Institute of Pathology (AFIP) Rawalpindi, Department of Chemical Pathology & Endocrinology, from Mar 2018 to Aug 2018. Methodology: Hundred subjects with ages ranging from 18 to 34 years, irrespective of gender, were randomly selected for this study. Five milliliters venous blood sample was collected from each subject in a serum separator and divided into two aliquots. First aliquot was centrifuged and analyzed immediately for TSH, while second aliquot was stored for 24 hours and was then analyzed. TSH was measured by third generation assay usingchemiluminescence technique on ADVIA Centaur® XP. Serum TSH levels were also analyzed twice daily; in the morning (0800 to 0900 hours) and afternoon (1400 to 1600 hours). Data was analyzed using SPSS version 24. Frequency and percentages were calculated for qualitative variables like gender and pre-analytical variables. Test of significance Mann-Whitney U-test was applied and p-value <0.05 was taken as significant. Results: Mean age of subjects was 23 ± 3.4 years. Change in circadian rhythm was observed in 17 (28%) males and 14 (36%) females. Statistically significant association was found between morning and evening TSH levels, while no change was observed in TSH level by early and late centrifugation of samples. Conclusion: TSH levels vary significantly between blood samples collected at different timings of the day from the same person. TSH is resistant to degradation, immunologically stable, and reasonably insensitive to potential problems associated with routine specimen handling, when measured by immunoassay technique. Therefore, it is helpful in large epidemiological studies and small size laboratory, which require long transportation time and storage.

Cord Blood Thyroid-Stimulating Hormone Level: Interpretation in Light of Antenatal and Perinatal Factors

2018 ◽  
Vol 32 (4) ◽  
pp. 87-92
Author(s):  
Ravi Bhatia ◽  
Dinesh Rajwaniya ◽  
Indira S. Paul
Keyword(s):  
Cord Blood ◽  
Fetal Distress ◽  
Thyroid Stimulating Hormone ◽  
Normal Vaginal Delivery ◽  
P Value ◽  
Perinatal Factors ◽  
Cross Sectional ◽  
Normal Delivery ◽  
Tsh Levels ◽  
Stimulating Hormone

Objective: To study the influence of antenatal and perinatal factors on umbilical cord blood thyroid-stimulating hormone (CB TSH) levels. Design: Cross-sectional study. Setting: Private Medical College. Methods: CB TSH levels were measured in 1147 neonates using chemiluminescence immunoassay. The effect of antenatal and perinatal factors on CB TSH values was analyzed statistically. Results: The mean TSH value was 6.811 mIu/mL. A total of 44 neonates (3.83%) had a CB TSH value greater than 20 mIu/mL and had to be recalled for a repeat workup. CB TSH was significantly raised in first-order births, those born via normal vaginal delivery, and in those whom the lower section caesarean section (LSCS) was done for fetal distress (all P value <.05). Male babies had a significantly higher CB TSH value as compared to the females. Babies having Apgar < 7 at 1 min also had a significantly higher CB TSH value. Maternal hypothyroidism did not have any significant effect. On multivariate analysis, we found a positive correlation between birth weight, Apgar, and gestational age with CB TSH values. Conclusion: The incidence of neonates having a CB TSH greater than 20 mIu/mL was 3.83%. Male children, those delivered via normal delivery, those delivered via LSCS where fetal distress was an indication, and those requiring resuscitation, were significant factors affecting CB TSH values.

Association between metabolic syndrome and thyroid stimulating hormone - A cross sectional study

2019 ◽  
Vol 9 (2) ◽  
pp. 87-90
Author(s):  
Karanam Madhuri ◽  
◽  
Rishi Kumar Venkatachalam ◽  
A Nasreen Begum ◽  
Shamsheer Khan P ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
Sectional Study ◽  
Cross Sectional ◽  
Stimulating Hormone

scholarly journals Quantitative Assessment Of The Variations In Thyroid Dimensions In Relation To Increase In Serum TSH In Euthyroids

2018 ◽  
Vol 08 (02) ◽  
pp. 72-76
Author(s):  
Mahrukh Kamran ◽  
Sahar Mubeen ◽  
Iffat Raza ◽  
Sanobar Bughio ◽  
Hira Waseem ◽  
...  
Keyword(s):  
Total Variation ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
Left Lobe ◽  
University Hospital ◽  
P Value ◽  
Cross Sectional ◽  
Right Lobe ◽  
The Right ◽  
Serum Tsh

Objectives: To determine the effect of serum TSH on thyroid dimensions of each lobe and to measure the amount of effect of per unit increase in serum TSH on thyroid dimensions of each lobe in euthyroids. Study Design: It was a cross-sectional study. Setting: The study was conducted at Ziauddin University Hospital, Clifton, Karachi. Methodology: Healthy participants aged 21 years and above were included through convenient sampling. Serum Thyroid stimulating hormone was evaluated and ultrasound of thyroid gland TG of 192 euthyroid participants was performed. Spearman correlation and regression analysis was applied to evaluate the relationship between TSH and TG dimensions Results: Relationship of increase in serum TSH with decrease in light lobe AP dimension was most significant. (r= -0.142 P-Value=0.001) and CC dimension least significant (r= -0.0098 P-Value=0.001). Where as in the left lobe AP dimension decreases significantly with increase serum TSH (r= -0.147 P-value=0.001). 11.7% of total variation in AP dimension, 3.5% of total variation in ML dimension and 6.5% of total variation in CC dimension in right lobe thyroid are because of serum TSH. While 9.5% of the total variation in AP dimension in left lobe is also due to serum TSH. Conclusion: Negative and significant correlation between serum TSH and thyroid dimensions was observed. Serum TSH inversely and significantly affects all the dimensions of the right lobe and only one dimension in the left lobe

scholarly journals Relationship between Serum Thyroid-stimulating Hormone Receptor Autoantibodies and Activity and Severity of Thyroid Eye Disease

2021 ◽  
Vol 62 (11) ◽  
pp. 1459-1464
Author(s):  
Je Sang Lee ◽  
Si Hyung Lee ◽  
Bo Yeon Kim ◽  
Sun Young Jang
Keyword(s):  
Optic Neuropathy ◽  
Clinical Signs ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
Thyroid Eye Disease ◽  
Eye Disease ◽  
Clinical Activity ◽  
Cross Sectional ◽  
Severity Grading ◽  
Stimulating Hormone

Purpose: To study the relationship between the levels of serum thyroid-stimulating hormone (TSH)-receptor autoantibodies (TRAbs) and thyroid eye disease (TED) activity and severity scores.Methods: A cross-sectional study was performed. The medical records of 315 patients diagnosed with TED between March 2014 and December 2019 were reviewed. The clinical activity score (CAS) was used to assess TED activity and a modified NOSPECS score was used for severity grading. The serum TRAb level was measured using two assays: a TSHR binding inhibitory immunoglobulin (TBII) assay and thyroid stimulating immunoglobulin (TSI) bioassay.Results: The TBII and TSI assay results were significantly positively correlated with the CAS (R = 0.113 and 0.211, respectively; p < 0.05), modified NOSPECS score (R = 0.173 and 0.316, respectively; p < 0.05), and proptosis (R = 0.136 and 0.167, respectively; p < 0.05). Both assays demonstrated significant differences in the level of TRAb between patients with and without compressive optic neuropathy or corneal epithelial defects.Conclusions: The levels of TRAbs according to both TBII and TSI assays showed significant correlations with clinical signs of corneal involvement, optic neuropathy, and TED activity and severity.

scholarly journals Thyroid dysfunction in patients of metabolic syndrome: A study from a tertiary care center in India

2021 ◽  
Vol 12 (10) ◽  
pp. 47-50
Author(s):  
Ritu Gupta ◽  
Akhil K Vijayan ◽  
Sushma Choudhary
Keyword(s):  
Metabolic Syndrome ◽  
Thyroid Dysfunction ◽  
Care Center ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
P Value ◽  
Overt Hypothyroidism ◽  
Free T4 ◽  
Cross Sectional

Background: Metabolic syndrome is characterized by hypertension, dyslipidemia, central obesity, glucose intolerance, insulin resistance. Thyroid hormone acts as general pacemaker, accelerating metabolic process and may be associated with metabolic syndrome. There is no information available in literature regarding the prevalence and association of thyroid dysfunction in metabolic syndrome in this central region of the country. Aims and Objective: To estimate the prevalence of thyroid dysfunction in patients of metabolic syndrome. Materials and Methods: It is a duration based prospective cross sectional study including 200 patients of metabolic syndrome. A detailed history, clinical examination and relevant investigations including serum Free T4 (FT4), Free T3 (FT3), Thyroid Stimulating Hormone (TSH) were done. Range, frequencies, percentage, mean, standard deviation and P value were calculated. P value of < 0.05 was taken as significant. Results: Prevalence of thyroid dysfunction in metabolic syndrome patients was 28.5%. Prevalence of subclinical and overt hypothyroidism was 18.5% and 8.5% respectively. In patients with both metabolic syndrome and thyroid dysfunction, most common components associated are diabetes mellitus and hypertriglyceridemia. Conclusion: Thyroid dysfunction is significantly common in metabolic syndrome patients. It should be aggressively detected and treated in these patients for better outcome.

scholarly journals Evaluation of pituitary function in cases with the diagnosis of pediatric mild traumatic brain injury: Cross-sectional study

2016 ◽  
Vol 7 (04) ◽  
pp. 537-543 ◽  
Author(s):  
Hakan Aylanç ◽  
Filiz Tütüncüler ◽  
Necdet Süt
Keyword(s):  
Head Trauma ◽  
Early Period ◽  
Serum Cortisol ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
Cross Sectional ◽  
Pituitary Dysfunction ◽  
Duration Time ◽  
Basal Cortisol Level ◽  
Stimulating Hormone

ABSTRACT Background: This study was to determine whether pituitary dysfunction occurs after head trauma in children or not and which axis is affected more; to define the association of pituitary dysfunction with the severity of head trauma and duration time after the diagnosis of head trauma. Materials and Methods: In this study, 24 children who were diagnosed with head trauma were evaluated regarding pituitary dysfunction. In all cases, after 12 h fasting, serum cortisol, fT3, fT4, thyroid-stimulating hormone, prolactin, insulin-like growth factor-1, serum sodium, urine density, follicle-stimulating hormone, luteinizing hormone, in female cases E2, in male cases, TT levels were determined. Results: Mean age of children was 9.5 ± 3.1 years, 14 children (58.3%) had mild, 9 children (37.5%) had moderate, and 1 children (4.2%) had severe head trauma according to the Glasgow coma scale. Mean duration time after head trauma was 29.4 ± 9.8 months. In all cases, no pathologic condition was determined in the pituitary hormonal axis. In one children (4.2%), low basal cortisol level was found. There were no children with hormonal deficiency in this study. Conclusion: Although pituitary dysfunction after head trauma may develop in the early period, some may present in the late period; therefore, all cases should be followed up at outpatient clinics for a longer period.

Edinburgh Vein Study: Methods and Response in a Survey of Venous Disease in the General Population

1997 ◽  
Vol 12 (4) ◽  
pp. 127-135 ◽  
Author(s):  
C J. Evans ◽  
F. G. R. Fowkes ◽  
C. V. Ruckley ◽  
P. L. Allan ◽  
M. N. Carson ◽  
...  
Keyword(s):  
General Population ◽  
Response Rate ◽  
Venous Blood ◽  
Disease Status ◽  
Epidemiological Studies ◽  
Ethnic Origin ◽  
Cross Sectional Study ◽  
Venous Disease ◽  
Cross Sectional ◽  
Study Participants

Objective: To describe the methods required to conduct a large epidemiological study of venous disease in the general population, and the resulting response. Design: Cross-sectional study. Setting: University of Edinburgh. Participants: Men and women aged 18–64 years, randomly selected from general practice registers. Methods: Subjects were invited for the following procedures: questionnaire, height and weight measurement, classification of varices and chronic venous insufficiency, duplex measurement of duration of venous reflux and venous blood sampling. A questionnaire survey of non-responders was carried out. Results of response: A total of 1566 subjects attended, a final response rate of 53.8%. The response rate increased with age. The distribution of ethnic origin and social class of attenders was similar to that of the general Edinburgh population. Study participants were generally older, from more affluent areas and more often female than non-responders ( p ≤ 0.001). Conclusions: Large epidemiological studies of venous disease in the community are feasible but the level of response illustrates the importance of obtaining information on the disease status of non-responders.

scholarly journals Comparison of TSH Levels From Several Types Of Blood Collection Device and Description of TSH Levels Based on Gender and Age

2019 ◽  
Vol 26 (2) ◽  
Author(s):  
Gunawan Eka Putra ◽  
Ninik Sukartini ◽  
Suzanna Immanuel ◽  
Fify Henrika ◽  
Nuri Dyah Indrasari
Keyword(s):  
Old Age ◽  
Turnaround Time ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
World Health ◽  
Blood Collection ◽  
Age Group ◽  
Cross Sectional ◽  
Gender And Age ◽  
Tsh Levels

Thyroid-stimulating hormone (TSH) is an important parameter in diagnosing thyroid disease, using serum according to World Health Organization’s (WHO) recommendations. The use of plasma can help improving turnaround time (TAT) but the discrepancy with serum is unknown. A cross-sectional study using 89 blood samples was done to compare TSH levels using serum tubes with clot activator (Tube I), plasma tubes with heparin (Tube II), and plasma tubes with heparin-gel separator (Tube III); and to show an overview of TSH levels according to gender and age. The median TSH levels in tubes I, II, and III were 1.380 (0.032-7.420) µIU/mL, 1.380 (0.030-7.480) µIU/mL, and 1.360 (0.030-7.460) µIU/mL respectively. There were no statistically significant differences in TSH levels of the three tubes. The median TSH levels differences of tubes II and III compared to tube I were -0.9% (-7.2 - 2.2) and -1.7% (-8.0 - 1.6) respectively. Biases of the measurement results obtained were in accordance with the spesicified desirable bias according to Ricos. The median TSH levels of the male and female groups was 1.500 (0.032-4.250) µIU/mL and 1.345 (0.058-7.420) µIU/mL respectively. Median TSH levels of 31-40 years old age group and >61 years old age group were 1.190 (0.609-3.240) µIU/mL and 1.730 (0.088-5.760) µIU/mL respectively. Specimens from three tubes could be used to examine TSH levels. Measurement of TSH levels showed higher median in the male and older group.

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