1. Ordinary serum tube muaj lub hau liab. Cov raj sau ntshav tsis muaj cov tshuaj ntxiv. Nws yog siv rau kev ntsuas ntshav biochemistry niaj hnub, txhab nyiaj hauv tuam txhab thiab kuaj kab mob.
2. Lub txiv kab ntxwv liab liab ntawm lub raj xa ntshav sai, nrog cov coagulant hauv cov raj sau ntshav, tuaj yeem qhib lub fibrinase thiab tig cov fibrin soluble rau hauv cov fibrin polymer uas tsis yaj, thiab tom qab ntawd tsim cov fibrin khov khov. Cov raj ntshav sai tuaj yeem coagulate cov ntshav sau hauv 5 feeb, uas yog qhov tsim nyog rau kev kuaj ntshav sai.
3. Lub hau kub ntawm qhov inert sib cais gel coagulation txhawb raj, thiab inert cais cov gel thiab coagulant tau ntxiv rau hauv cov ntshav sau raj. Tom qab qhov hnoos qeev tau muab tso rau hauv qhov nruab nrab, qhov sib cais tsis sib xws tuaj yeem cais cov kua ua kua (cov ntshav los yog ntshav) thiab cov khoom sib xyaw (cov qe ntshav liab, cov qe ntshav dawb, platelets, fibrin, thiab lwm yam) hauv cov ntshav thiab sib sau ua ke hauv nruab nrab ntawm lub raj kuaj los ua ib qho teeb meem. Cov hnoos qeev tsis pub dhau 48 teev kom nws khov kho. Cov coagulant tuaj yeem ua kom sai cov txheej txheem coagulation thiab ua kom nrawm txheej txheem coagulation, uas yog qhov tsim nyog rau kev ntsuas ntshav biochemical ceev.
4. Lub raj heparin anticoagulation raj muaj lub hau ntsuab, thiab ntxiv heparin rau hauv cov hlab ntshav. Heparin ncaj qha muaj cov nyhuv antithrombin, uas tuaj yeem ua rau lub sijhawm khov ntawm cov hnoos qeev. Nws yog qhov tsim nyog rau kev ntsuas ntshav liab tsis txaus, kuaj ntshav roj, ntsuas hematocrit, erythrocyte sedimentation tus nqi thiab kev txiav txim siab biochemical dav dav, tsis haum rau kev kuaj ntshav coagulation. Heparin ntau dhau tuaj yeem ua rau muaj cov qe ntshav dawb ntau ntxiv thiab tsis tuaj yeem siv rau suav cov qe ntshav dawb. Vim tias nws tuaj yeem ua rau cov ntshav hlais nrog lub teeb xiav tom qab, nws tsis haum rau kev faib cov qe ntshav dawb.
