Uvavanyo lobuzali: yintoni kwaye yenziwa njani

Umxholo

• Uvavanyo lwenzala lwenziwa njani
• Uvavanyo lwe-DNA ngelixa ukhulelwe
• Uthatha phi uvavanyo lobuzali

Uvavanyo lobuzali luhlobo lovavanyo lwe-DNA olujolise ekuqinisekiseni inqanaba lokuzala phakathi komntu kunye notata wakhe. Olu vavanyo lunokwenziwa ngexesha lokukhulelwa okanye emva kokuzalwa ngokuhlalutya igazi, amathe okanye iinwele zikamama, umntwana kunye notata otyholwayo.

Ezona ntlobo ziphambili zovavanyo lukatata zezi:

• Uvavanyo lokujonga umntwana ngaphambi kokubeleka: inokwenziwa kwiveki yesi-8 yokumitha usebenzisa isampulu encinci yegazi likamama, njengoko i-DNA yomntwana sele ifunyenwe kwigazi likanina, kwaye xa kuthelekiswa nezinto ekuthiwa zezofuzo lukatata;
• Uvavanyo lwe-Amniocentesis paternity: Ingenziwa phakathi komhla we-14 nowama-28 wokumitha ngokuqokelela ulwelo lwe-amniotic olujikeleze umntwana ongekazalwa kwaye uthelekise nezinto ekuthiwa zezofuzo kutata;
• Uvavanyo lweCordocentesis paternity: inokwenziwa ukusuka kwiveki yama-29 yokukhulelwa ngokuqokelela isampulu yegazi kwimveku engekazalwa ngentambo kwaye uyithelekise nezinto ekuthiwa zezofuzo kutata;
• Uvavanyo lwe-Corial villus paternity: Inokwenziwa phakathi kweeveki ze-11 neye-13 zokukhulelwa ngokuqokelela amaqhekeza e-placenta kunye nokuthelekisa nezinto zemvelo zikatata otyholwayo.

Imathiriyeli yofuzo katata otyholwayo inokuba ligazi, amathe okanye iinwele, nangona kunjalo ezinye iilebhu zincomela ukuba kuqokelelwe iinwele ezilishumi ezithathwe kwingcambu. Kwimeko yokusweleka kukatata otyholwayo, uvavanyo lukatata lungenziwa kusetyenziswa iisampulu zegazi ezivela kumama okanye utata womfi.

Ukuqokelelwa kweSaliva yovavanyo loBuzali

Uvavanyo lwenzala lwenziwa njani

Uvavanyo lokuba nguyise lwenziwa ngohlalutyo lwesampulu ethunyelwe elebhu, apho kwenziwa khona iimolekyuli ezibonisa inqanaba lokuzala phakathi kwabantu abaye bavavanywa ngokuthelekisa iDNA. Funda ngakumbi ngovavanyo lwe-DNA.

Iziphumo zovavanyo lobuzali zikhutshwa phakathi kweeveki ezimbini ukuya kwezintathu, kuxhomekeke kwilabhoratri ekwenziwa kuyo, kwaye i-99.9% ithembekile.

Uvavanyo lwe-DNA ngelixa ukhulelwe

Ukuvavanywa kwe-DNA ngexesha lokukhulelwa kunokwenziwa ukusuka kwiveki yesi-8 yokumitha ngokuqokelela igazi likamama, kuba ngeli xesha i-DNA yomntwana sele ifunyenwe ijikeleza kwigazi loomama. Nangona kunjalo, xa uvavanyo lwe-DNA luchonga kuphela i-DNA yoomama, kungafuneka ukuba uyiqokelele kwakhona okanye ulinde iiveki ezimbalwa ukuze kuqokelelwe ezinye izinto.

Ngokwesiqhelo kwiveki ye-12 yokukhulelwa, i-DNA inokuqokelelwa kusetyenziswa i-chorionic villus biopsy, apho kuqokelelwa khona isampulu yenxalenye yeplasenta eneseli zomntwana, ithathwa ukuze ihlolwe elebhu kwaye kuthelekiswa nezinto zemfuza usana olungekazalwa. Malunga neveki ye-16 yokukhulelwa, kunokuqokelelwa ulwelo lwe-amniotic kwaye malunga neveki yama-20, igazi elivela kwimbambo yesibeleko.

Nokuba yeyiphi na indlela esetyenzisiweyo ukuqokelela imathiriyeli yolusu olungekazalwa, iDNA ithelekiswa ne-DNA katata wokuvavanya inqanaba lokhama.

Uthatha phi uvavanyo lobuzali

Uvavanyo lobuzali lunokwenziwa ngokuzimeleyo okanye ngomyalelo wenkundla kwiilebhu ezikhethekileyo. Ezinye iilebhu ezenza uvavanyo lobuzali eBrazil zezi:

• Ubunjineli bemolekyuli- Ifowuni: (11) 3288-1188;
• Iziko leGenome - Umnxeba: 0800 771 1137 okanye (11) 50799593.

Kubalulekile ukwazisa ngexesha loviwo ukuba ukhona na umntu otofelwe igazi okanye umongo wethambo kwiinyanga ezi-6 phambi kovavanyo, njengoko kwezi meko iziphumo zinokuthandabuza, zilungele ngakumbi ukwenza uvavanyo lobuzali ukuqokelela isampulu.