血清TT3、FT3、TT4、FT4以及TSH检测意义

目的探讨TT3、FT3、TT4、FT4以及TSH在甲状腺疾病患者中检测的价值;总结分析各指标变化情况。方法收集分析本院200例甲状腺疾病患者,并选取健康者50例作为对照组。用化学发光分析法检测各组甲状腺功能,并对各组各指标的检测值进行比较。结果甲亢组T3、T4、FT3、FT4均高于健康对照组,甲减组T3、T4、FT3、FT4均低于健康对照组。TSH含量甲亢组低于健康对照组,甲减组明显高于健康对照组。与健康对照组比较其差异均有统计学意义。甲亢组FT3诊断符合率为96%,TSH为96%,T3为92%,FT4为90%,T4为88%。甲减组TSH诊断符合率为100%,FT4为93%,T4为90%,FT3为77%,T3为70%。结论 FT3、T3、TSH在甲亢诊断中有临床意义;FT4、T4、TSH在甲减诊断中有临床意义。     

甲状腺功能低下症血液TSH、T4、T3水平与甲状腺形态变化278例分析

目的：探究甲状腺功能低下症血液TSH、T4、T3含量与甲状腺形态学变化的关系。方法：对278例先天性甲状腺功能低下症行甲状腺核素扫描,并测定血清TSH、T4、T3含量。结果：暂时性甲状腺功能低下症和甲状腺基本正常的永久性甲状腺功能低下症血液TSH、T4、T3含量与甲状腺形态和功能异常者差异有显著性（P〈0.01）,甲状腺缺如、异位患儿血液TSH、T4、T3含量与甲状腺发育不良、摄锝功能低下患儿差异有显著性（P〈0.01）。结论：甲状腺形态和功能的变化与血液TSH、T4、T3水平有关。     

正常甲状腺功能人群TSH、FT3/FT4比值与代谢综合征的相关性研究

目的 探讨正常范围的促甲状腺激素(TSH)和游离三碘甲状腺原氨酸/游离甲状腺素比率(FT3/FT4)与代谢综合征(MS)的相关性。方法 7983例甲状腺功能正常员工纳入本研究,分别根据男女的TSH、FT3/FT4四分位数水平进行分组。结果 随着TSH四分位数组别增高,男性腰围和甘油三酯呈升高趋势,HDL-C呈下降趋势;女性收缩压、舒张压和甘油三酯呈升高趋势,HDL-C呈下降趋势;随着FT3/FT4四分位数组别增高,男性收缩压、舒张压、腰围和甘油三酯均呈升高趋势,HDL-C呈下降趋势;女性舒张压和甘油三酯呈升高趋势,HDL-C呈下降趋势(P_趋势值<0.05)。校准年龄和BMI后,TSH与MS患病风险无显著相关(男性:P_趋势值=0.563,女性:P_趋势值=0.796),而FT3/FT4四分位数水平与MS患病风险呈正相关(男女P_趋势值<0.001)。结论 在甲状腺功能正常人群中,较高的FT3/FT4与MS患病风险升高有关,而TSH与MS无显著相关性。     

血清FT3、FT4、TSH及Hcy联合检测诊断甲状腺功能减退的临床价值

目的研究血清游离三碘甲腺原氨酸(FT3)、游离甲状腺素(FT4)、促甲状腺激素(TSH)及同型半胱氨酸(Hcy)联合检测诊断甲状腺功能减退的临床价值。方法选取该院2015年9月至2016年9月收治的甲状腺功能减退患者88例(甲减组),同期选择80例亚临床甲状腺功能减退患者(亚甲减组)和60例健康体检者(对照组),分别检测血清FT3、FT4、TSH及Hcy水平,并比较各组之间的差异,同时计算出各指标检测的灵敏度和特异度。结果甲减组的血清FT3和FT4水平明显低于亚甲减组和对照组,差异有统计学意义(P0.05);血清TSH和Hcy水平明显高于亚甲减组和对照组,差异有统计学意义(P0.05);亚甲减组和对照组的血清FT3和FT4水平比较,差异无统计学意义(P0.05);亚甲减组血清TSH和Hcy水平明显高于对照组,差异有统计学意义(P0.05)。血清TSH和Hcy诊断甲状腺功能减退的特异度和灵敏度均明显高于血清FT3和FT4,差异有统计学意义(P0.05)。结论血清TSH和Hcy水平诊断甲状腺功能减退有较高的灵敏度和特异度,并能有效预测亚临床甲减向甲减转化,具有较高的诊断价值,值得在临床推广。     

磁性均相酶免疫技术测定血清TSH、FT3、FT4的临床应用

本实验室 2 0 0 1年开始用深圳新产业生物化学工程有限公司提供 (由瑞士引进 )的SEROZYME磁性均相酶标免疫技术系统 ,开展了以检测内分泌激素为主的检测方法。主要检测促甲状腺激素 (thyroid stimulat inghormone ,TSH)、三碘甲腺原氨酸 (triiodothyronine ,T3)、四碘甲状腺氨酸 (thyroxine ,T4 )、游离三碘甲腺原氨酸 (FT3)、游离甲状腺素 (freethyroxine ,FT4 )等项目。为了评价该技术的可靠性及仪器性能 ,参考有关文献及该公司的磁性分离酶联免疫测定方法和临床应用方案及SEROZYME III型吸光值测定仪、磁性仪器使用说明等 ,…     

甲状腺功能亢进症患者血清FT3、FT4、TSH水平与其血清尿酸水平的相关性分析

目的 探讨甲状腺功能亢进症患者血清游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、促甲状腺激素(TSH)水平与其血清尿酸(UA)水平的相关性.方法 回顾性分析2018年2月～2020年3月我院收治的72例甲状腺功能亢进症患者临床资料,根据UA检测结果(男性>4209μmol/L,女性>3609μmol/L)分为...     

彩色多普勒超声血流参数联合T3、T4、TSH早期诊断甲状腺功能亢进症的临床价值

目的:探讨彩色多普勒超声血流参数联合三碘甲状腺原氨酸(triiodothyronine,T3)、甲状腺激素(thyroxine,T4)、促甲状腺激素(thyroid stimulating hormone,TSH)早期诊断甲状腺功能亢进症的临床价值。方法:选取2021年1月—2023年1月寿光市中医医院收治的甲状腺功能亢进症患者80例,同时选取我院同期健康体检者50例作为对照组。均行彩色多普勒超声扫描及血清T3、T4、TSH水平检测,比较两组彩色多普勒超声血流参数最大血流量(maxi-mum flow value,Vmax)、平均血流量(mean-mum flow value,Vmean)、阻力指数(resistance index,RI)及血清T3、T4、TSH水平,并采用受试者工作特征(ROC)曲线分析上述指标单独及联合诊断甲状腺功能亢进症的灵敏度、特异度。结果:甲状腺功能亢进症组彩色多普勒超声血流参数Vmax、Vmean水平均高于对照组,RI水平低于对照组,差异有统计学意义(P<0.05)。甲状腺功能亢进症组血清T3、T4水平高于对照组,TSH水平低于对照组,差异有统计学意...     

非酒精肝硬化肝性脑病患者血清FT3、FT4、TSH的化学发光分析

目的通过检测非酒精肝硬化肝性脑病患者游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、血清促甲状腺素(TSH)的水平变化,探讨血清甲状腺素在非酒精肝硬化肝性脑病中的临床意义。方法筛选非酒精肝硬化肝性脑病患者60例(实验组)和健康体检者40例(对照组),抽取所有参与者的空腹静脉血,采用化学发光法检测血清FT3、FT4、TSH的水平。结果实验组非酒精性肝硬化肝性脑病患者FT3、FT4和TSH 3者的含量均低于对照组(P<0.01)。B级组在FT3、FT4和TSH 3者的含量明显高于C级组患者(P<0.05)。甲状腺素含量随着肝硬化级别的升高逐渐减少。非酒精性肝硬化肝性脑病患者Child-Pugh分级越高,其死亡率越高,预后越差。结论血清FT3、FT4、TSH水平的变化与肝硬化Child-Pugh分级存在密切相关,检测这些指标对判断病情、估计预后有重要的参考价值。     

妊娠晚期血清TSH、FT3、FT4水平与血脂变化的相关性分析

目的 探讨妊娠晚期女性血清游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、促甲状腺激素(TSH)与血脂变化及与不良妊娠结局的相关性.方法 回顾性分析2018年6月到2019年6月该院收治的120例孕妇的临床资料,根据妊娠晚期是否出现高脂血症分为高脂血症(A组,40例)、未出现高脂血症(B组,80例),所有孕妇均...     

不同化学发光检测系统FT3、FT4、TSH结果的可比性和偏倚评估

目的通过对不同化学发光检测系统进行方法学比对和偏倚评估,探讨不同化学发光检测系统之间的检测结果是否具有可比性,及评估其偏倚是否在允许的范围内。方法按照NCCLSEP9A2文件的要求,以拜尔ACS180SE化学发光仪为目标系统,拜尔Centaur 240化学发光仪为试验系统,用患者的新鲜血清对两检测系统的FT3、FT4、TSH进行检测,计算试验系统与目标系统之间的偏差,以澳大利亚室间质评允许总误差的1／2为标准,判断检验结果的可比性。结果试验系统的各项目均与目标系统具可比性。结论当实验室对同一检测项目有2套或2套以上分析系统时,应对其进行比对和偏倚评估,以实现检验结果的准确、稳定。     

游离甲状腺素/促甲状腺素比值作为甲状腺功能评价指标的研究

目的　探索甲状腺功能紊乱者最适实验室诊断指标。方法　采用化学发光免疫技术(CLIA)测定不同人群中三碘甲状腺原氨酸 (TT3 )、甲状腺素 (TT4)、促甲状腺素 (TSH)、游离三碘甲状腺原氨酸 (FT3 )、游离甲状腺素 (FT4)浓度 ,比较受试者工作特征曲线 (ROC)下面积及频数分布散点图分离效果。结果　甲减诊断ROC值TSH :0 94± 0 0 2 ,FT3 :0 70± 0 0 7,FT4:0 92± 0 0 4 ,FT4/TSH比值 :0 95± 0 0 2 ;甲亢诊断ROC值分别为 0 86± 0 0 5 ,0 82± 0 0 3,0 83± 0 0 6 ,0 90± 0 0 5。从频数分布散点图显示 ,FT4/TSH的分离效率甲减 93% ,甲亢 85 %。结论　CLIA法测定FT4/TSH比值显示出最佳的性能与分离效果 ,可提高甲状腺功能的诊断效率 ,FT4/TSH比值应被推荐为甲状腺功能评价的首选指标。     

Serum concentration of T3, T4, FT3, FT4, TSH during cycloergometer muscular exercise

The serum concentrations of total and free thyroid hormones and of TSH have been determined in 10 trained subjects before, during and after exercise on a bicycle ergometer. The concentrations of T4 and FT4 increase during the muscular exercise and reduce 30 minutes after the end of work; the decrease is statistically meaningful for the T4. The concentrations of TSH and T3 reduce 30 minutes after the end of work on a bicycle ergometer. The serum concentration of FT3 and of hematocrit doesn't presents any statistically meaningful variation during and after the muscular exercise. The results achieved in our work are in support of the hypothesis that the physic and intense exercise would involve the thyroid gland exalting its activity.     

电化学发光免疫法检测TSH、T3、T4、FT3、FT4相关性观察

目的观察电化学发光免疫检测血清TSH、T3、T4、FT3、FT4之间相关性。方法对134例临床标本同时进行TSH、T3、T4、FT、3、FT4电化学发光免疫法检测,并对此五项指标间相关性进行统计学分析。结果TSH／T3、TSH／T4、TSH／FT3、TSH／FT4、T3／FT4、FT3／T4之间具有直线相关关系,相关系数分别为:0.362,0.324,0.404,0.335,0.907,0.819,0.808,0.839,0.839,0.955。结论T3／T4、FT3／FT4之间相关系数大,r2>0.8,具有一定的医学意义。     

Classification of hypothyroidism in evaluating patients after radioiodine therapy by serum cholesterol, T3-uptake. Total T4, FT4-index, total T3, basal TSH and TRH-test

Abstract. During a follow-up examination of patients after radioiodine therapy for thyrotoxicosis, 128 patients without recurrent hyperthyroidism were investigated for the clarification of different degrees of hypothyroidism. The clinical diagnosis and the conventional tests for circulating thyroid hormones were compared to the estimation of serum thyroid stimulating hormone (TSH), and to the thyrotropin-releasing hormone (TRH) test, which was performed with 500 μg synthetic TRH I.V., and referred to age and sex specific normal ranges. Moreover, serum triiodothyronine (T₃) was estimated by radioimmunoassay. Results: 1. A gradual classification of biochemical group-differences gave more significant discrimination than a division into groups based on clinical impression. Different grades of severity of hypothyroidism could be demonstrated by highly significant differences of free thyroxine index (FT₄-Index) between the 1st group of patients with low FT₄-Index and a 2nd group with raised basal TSH (and normal FT₄-Index), between the 2nd group and a 3rd group with an elevated value of Δ TSH_max (and normal FT₄-Index and basal TSH), and between the 3rd group and a 4th group of biochemically normal reacting patients and controls. There was a less significant difference with very considerable overlap between clinically established groups. 2. T₃-uptake, total T₄ and FT₄-Index are not sufficient for detecting hypothyroidism in individual patients, although their group-differences are significant in biochemical classification. 3. Neither between clinical nor between biochemical groups was there any significant correlation with serum cholesterol. 4. Triiodothyronine can be normal or elevated in a situation with low T₄ and raised TSH concentrations. Conclusions: Evidence could be given that hypothyroidism is a graded phenomenon. Its classification by biochemical data is more reasonable than a clinical division. Advancing severity of hypothyroidism after radiation therapy is compensated during a certain period by supplementary production of triiodothyronine. As thyroid hormone concentration in patients with pathological serum TSH or TRH-test is significantly lower than in euthyroid patients or in controls, replacement therapy in early stages of hypothyroidism also seems reasonable.     

Reference range of thyroid function (FT3, FT4 and TSH) among Indian adults

ObjectivesTo generate thyroid hormone reference norms using electro-chemiluminescence technique.Design and methodsCross sectional study on apparently normal 4349 Delhi adults (18–86 years). Predetermined exclusion criteria (goiter, hypoechogenicity or nodularity on ultrasound, elevated anti-thyroid peroxidase antibody, hypo or hyperthyroidism and family history of thyroid dysfunction) excluded 2433 subjects leaving 1916 (916 males and 1000 females) as the reference population.ResultsMean age and BMI of the reference population were 41.2 ± 18.1 years and 24.5 ± 4.4 kg/m² respectively. Median urinary iodine excretion was 233.6 μg/L (79–458;3rd–97th centile). The population was categorized into various age groups (18–30, 31–40, 41–50, 51–60, 61–70 and ≥ 70 years). Overall FT3 and FT4 values in the reference population irrespective of age, ranged from 2.4–8.8 (mean 4.6 ± 0.9) pmol/L and 10.1–24.8 (mean 15.40 ± 2.0) pmol/L, respectively. Mean TSH value in the reference population was 2.2 ± 0.9 mIU/L which was significantly lower than that of total population (3.8 ± 6.1; p < 0.001).ConclusionFT3 values were observed to be significantly higher in men than women (p = 0.001). The centiles (3rd, 5th, 10th, 25th, 50th, 75th, 90th, 95th and 97th) of FT3, FT4 and TSH were derived for reference purposes in Indian adults. This community based study in Indian adults has established mean reference intervals for FT3, FT4 and TSH for different age groups for both sexes separately using strict exclusion criteria. These can be used as reference norms for Indian adults.     

滨州高碘区健康人群FT3、FT4、TSH、TPOAb的参考区间探讨

目的：以我院查体中心检测过的健康人群的FT3、FT4、TSH和TPOAb的检验结果为例,探讨建立滨州高碘地区相关检测项目的参考区间。方法：按照CLSI文件C28-P3《医学实验室参考区间的定义、建立和确认》中的推荐方法,参考ISO15189：2003（E）《医学实验室—质量和能力的专用要求》条款要求,先引用权威书刊、厂家试剂说明书或转移其他医院实验室的生物参考区间,然后进行实验验证,验证不通过的项目,收集480例健康参考个体自建适用于本实验室的生物参考区间,定期进行临床评审。结果：FT3、FT4、TSH现用生物参考区间验证通过,可以继续使用：TPOAb验证不通过,不适用,须自建生物参考区间,自建区间为0-36IU／ml。结论：采用本研究方法确立本地区健康人群FT3、FT4、TSH和TPOAb的参考区间,从多途径保证检验指标的生物参考区间可靠、准确、科学、实用。能确保相关参考区间符合临床要求,值得推广应用。     

自动化学发光免疫分析法测定血清T3T4TSH的评价

目的评价以■喧酯作为标记物的ACS－180自动化学发光免疫分析法测定血清T3、T4、TSH的方法特性。方法对此法的灵敏度、特异性、干扰性、回收率、批内误差、批间误差与放免的相关性进行了研究。结果此法灵敏度分别为：T3：0．2ng／ml,T4：5．0ng／ml,TSH：0．03μIU／ml;平均回收率：T3：104％,T4：102％,TSH：105％。与放免法有良好的相关性,r＝0．972－0．978。结论此法检测迅速,灵敏度高,准确性、特异性强,适合于临床应用。