Cov thyroid ua lub luag haujlwm tseem ceeb hauv kev tswj hwm lub cev metabolism, kev loj hlob thiab kev loj hlob. Txhua yam kev ua haujlwm tsis zoo ntawm cov thyroid tuaj yeem ua rau muaj teeb meem kev noj qab haus huv. Ib qho tseem ceeb cov tshuaj hormones tsim los ntawm cov thyroid caj pas yog T4, uas yog hloov dua siab tshiab nyob rau hauv ntau lub cev nqaij daim tawv mus rau lwm yam tseem ceeb cov tshuaj hormones, T3.

Dawb T4 (f-T4) yog ib qho kev ntsuas ntawm qhov tsis muaj zog thiab ua haujlwm ntawm T4 cov tshuaj hormones hauv cov ntshav. Kev saib xyuas qib f-T4 yog qhov tseem ceeb rau kev ntsuas cov thyroid ua haujlwm thiab kuaj cov thyroid kab mob.

Qhov tseem ceeb ntawm kev xeem f-T4:

Kev ntsuas f-T4 qib yog qhov tseem ceeb kom paub qhov txawv ntawm hyperthyroidism (hyperthyroidism) los ntawm hypothyroidism (hypothyroidism). Hyperthyroidism yog tus cwj pwm los ntawm kev nce qib f-T4, thaum hypothyroidism ua rau txo qis f-T4 qib.

Tsis tas li ntawd, qib f-T4 yog siv los kuaj xyuas cov thyroid subclinical tsis ua haujlwm hauv cov neeg mob uas muaj cov tsos mob tsis meej ntawm cov thyroid kab mob. Ib qib TSH ib txwm tab sis qib f-T4 qis qhia tau hais tias subclinical hypothyroidism, qhov nce qib f-T4 thiab qib TSH ib txwm yuav qhia tau tias subclinical hyperthyroidism.

Ntxiv nrog rau kev kuaj mob, kev saib xyuas qib f-T4 yog qhov tseem ceeb los ntsuas qhov ua tau zoo ntawm cov thyroid kho. Nyob rau hauv cov ntaub ntawv ntawm hypothyroidism, tus neeg mob siv ib tug hluavtaws daim ntawv ntawm T4 cov tshuaj hormones kom tswj cov thyroid hormones zoo. Kev ntsuas f-T4 tsis tu ncua yog tsim nyog los txiav txim siab qhov tsim nyog ntawm cov tshuaj hluavtaws T4.

Txhais lus ntawm f-T4 xeem:

Kev siv ntau yam rau f-T4 tuaj yeem sib txawv los ntawm chav kuaj thiab kev ntsuas siv rau kev sim. Txawm li cas los xij, qhov ib txwm muaj rau f-T4 qib feem ntau yog nyob nruab nrab ntawm 0.7 - 1.8 ng / dL.

Cov qib f-T4 txawv txav tuaj yeem qhia txog ntau yam thyroid kab mob, suav nrog hypothyroidism, hyperthyroidism, thiab thyroid nodules. Kev nce qib f-T4 tuaj yeem ua rau cov tsos mob xws li poob phaus, ntxhov siab, thiab tshee, thaum txo qis f-T4 tuaj yeem ua rau hnyav nce, qaug zog, thiab kev nyuaj siab.

nyob rau hauv xaus:

Cov thyroid ua haujlwm ua lub luag haujlwm tseem ceeb hauv kev tswj hwm kev noj qab haus huv thiab kev noj qab haus huv. Kev saib xyuas qib f-T4 yog qhov tseem ceeb rau kev ntsuas cov thyroid ua haujlwm thiab kuaj cov thyroid kab mob. Ib qho kev sim f-T4 kuj tseem tsim nyog los txiav txim siab cov tshuaj kho mob uas tsim nyog rau cov thyroid kab mob. Kev paub ntxov ntxov thiab kev tswj xyuas cov kab mob thyroid tuaj yeem tiv thaiv kev noj qab haus huv ntxiv. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog koj tus kws kho mob yog tias koj muaj cov tsos mob ntsig txog cov thyroid tsis ua haujlwm.

Hauv kev xaus, kev kuaj f-T4 yog ib qho tseem ceeb ntawm kev ntsuas kev noj qab haus huv ntawm cov thyroid thiab kev tswj hwm. Kev ntsuam xyuas cov thyroid ua haujlwm, suav nrog kev ntsuas f-T4, yuav tsum tau ua tsis tu ncua kom ntseeg tau tias cov thyroid ua haujlwm zoo thiab kev noj qab haus huv tag nrho.