Tiroid fonksiyonlar\u0131n\u0131n belirlenmesinde en hassas test TSH’t\u0131r.\u00a0Herhangi bir sorunu olmayan ki\u015filerde yaln\u0131zca TSH bak\u0131lmas\u0131 yeterlidir.\u00a0\u00a0Anne aday\u0131nda herhangi bir tiroid hastal\u0131\u011f\u0131 \u015f\u00fcphesi veya TSH sonu\u00e7lar\u0131nda normalden farkl\u0131l\u0131k saptand\u0131\u011f\u0131 durumda T3 ve T4’\u00fcn serbest formlar\u0131 bak\u0131lmal\u0131d\u0131r. Anne aday\u0131nda tiroid hastal\u0131\u011f\u0131 bulgular\u0131 yok ve TSH normal ise bu ST3 ve ST4 bak\u0131lmas\u0131 gereksizdir. Tiroid hastal\u0131\u011f\u0131 a\u00e7\u0131s\u0131ndan riski olan bireylerde TSH yan\u0131na ST4 eklenebilir.<\/p><\/blockquote>\n
\n
- TSH, FT3, FT4, T3 ve T+ tetkikleri,\u00a0sabah, a\u00e7 karna\u00a0<\/em>yap\u0131l\u0131r. \u0130la\u00e7 kullananlarda kan,\u00a0ila\u00e7 al\u0131m\u0131ndan \u00f6nce<\/em> al\u0131nmal\u0131d\u0131r.<\/li>\n
- Tiroid hastas\u0131 olmayanlarda tarama testi olarak\u00a0TSH bak\u0131lmas\u0131 yeterlidir.<\/em><\/li>\n
- Tiroid hastalar\u0131nda tiroid bezinin fonksiyonlar\u0131n\u0131 belirlemek i\u00e7in\u00a0TSH ve FT4 bak\u0131lmas\u0131 yeterlidir.<\/em><\/li>\n
- Tiroid bezinin ba\u011f\u0131\u015f\u0131kl\u0131k ile ilgili hastal\u0131klar\u0131n\u0131n tan\u0131s\u0131nda Anti TPO bak\u0131lmas\u0131 yeterlidir.<\/em>\u00a0Anti TPO y\u00fcksek olan olgular\u0131n \u00e7o\u011funda zaten anti TG de y\u00fcksek \u00e7\u0131kacakt\u0131r.<\/li>\n
- Tiroid antikorlar, \u015f\u00fcpheli hastalarda bir kez bak\u0131l\u0131r.\u00a0Tiroid hastal\u0131klar\u0131n\u0131n izlemi i\u00e7in art arda bak\u0131lmas\u0131na gerek yoktur.<\/em><\/li>\n<\/ul>\n
TSH<\/h3>\n
TSH’\u0131n gebelikteki de\u011ferleri, hamile olmayanlardakinden daha farkl\u0131d\u0131r.<\/p>\n
Hamile olmayan ki\u015filerde 0,5 ile 4 mIU\/L aras\u0131nda olmas\u0131 gerekir. Gebelik planlayanlarda TSH, 2,5 mIU\/L’nin alt\u0131nda tutulmaya \u00e7al\u0131\u015f\u0131lmal\u0131d\u0131r.<\/p>\n
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- \u0130lk \u00fc\u00e7 ayda 0,1-2,5 mIU\/L<\/li>\n
- \u0130kinci \u00fc\u00e7 ayda 0,2-3 mIU\/L<\/li>\n
- Son \u00fc\u00e7 ayda 0,3-3 mIU\/L<\/li>\n<\/ul>\n
aras\u0131nda olmal\u0131d\u0131r.<\/p>\n
Tiroid Hormonlar\u0131<\/h3>\n
Tiroid bezinden salg\u0131lanan temel tiroid hormonu T4’t\u00fcr. T4’e tiroksin de denir. Kandaki tiroid hormonlar\u0131n\u0131n bir k\u0131sm\u0131, proteine ba\u011fl\u0131 olarak ta\u015f\u0131n\u0131r. Proteine ba\u011fl\u0131 olan tiroid hormonu, hormon g\u00f6revi yapmaz ve kandan temizlenmez. Serbest olan ise hormon g\u00f6revi yapar ama k\u0131sa s\u00fcrede kandan temizlenir. Kandan temizlendi\u011finde yerini ba\u011fl\u0131 olanlar\u0131n proteinden ayr\u0131larak serbest hale gelenleri doldurur. Bu nedenle proteine ba\u011fl\u0131 tiroid hormonu, bir depo g\u00f6revi g\u00f6r\u00fcr. T4, y\u0131k\u0131l\u0131rken \u00f6nce T3 (triiodotironin) olu\u015fturur.<\/p>\n
Tiroid hormonlar\u0131n\u0131n de\u011ferlendirilmesinde serbest veya toplam hormon d\u00fczeylerine bak\u0131labilir.<\/p>\n
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- Total T4 4-11 mg\/dl (60-140 nM)<\/li>\n
- Total T3 75-174 ng\/dl (1.1-2.7 nM)<\/li>\n
- Serbest T4 0.7-2.1 ng\/dl (10-25 pM)<\/li>\n
- Serbest T3 0.2-0.5 ng\/dl (3-8 pM)<\/li>\n<\/ul>\n
Tiroglobulin<\/h3>\n
Tiroid hormonunun ba\u011fland\u0131\u011f\u0131 proteindir. Tiroid dokusu mevcut olan ki\u015filerde bak\u0131lmas\u0131n\u0131n hi\u00e7 bir anlam\u0131 yoktur. Diferansiye tiroid kanseri nedeniyle tiroid dokusu al\u0131nm\u0131\u015f olanlarda thyrotoxicosis factitia ay\u0131r\u0131c\u0131 tan\u0131s\u0131 i\u00e7in bak\u0131l\u0131r. Tiroid kanserinden ameliyat olmu\u015f de\u011filseniz sonu\u00e7lar\u0131n\u0131z aras\u0131nda tiroglobulin g\u00f6rd\u00fc\u011f\u00fcn\u00fcz taktirde g\u00f6rmemi\u015f gibi yapmal\u0131s\u0131n\u0131z.<\/p>\n
Tiroid Antikorlar\u0131<\/h3>\n
Hipo veya hipertiroidi saptanm\u0131\u015f olan olgularda yap\u0131l\u0131r.<\/p>\n
Antitiroid Peroksidaz (Anti TPO)<\/h4>\n
Tiroid bezinin ba\u011f\u0131\u015f\u0131kl\u0131k sistemi ile ilgili hastal\u0131klar\u0131n\u0131n tan\u0131s\u0131n\u0131 koymak ve nedenini saptamak i\u00e7in yap\u0131l\u0131r.<\/p>\n
Antitiroglobulin (TgAb)<\/h4>\n
Diferansiye tiroid kanseri takibinde kullan\u0131lan bir testtir.<\/p>\n
TSH Resept\u00f6r Uyar\u0131c\u0131 Antikorlar\u0131 (TSAb)<\/h4>\n
Graves hastal\u0131\u011f\u0131 denilen bir hipertiroidi tipinin tan\u0131s\u0131n\u0131 koymak ve nedenini saptamak i\u00e7in yap\u0131l\u0131r.<\/p>\n