To test a blood sample using a microarray chip, the sample must first go through many preparatory steps such as purification, nucleotide extraction, copying, amplification and labeling before being put onto the chip where the "hybridization" reaction takes place. Finally, the results are analyzed using a detection system. Hence these chips are only suitable for use in the laboratory.
使用微陣列晶片，血液必須做前置處理，經過純化、核酸粹取、核酸複製放大、標示等步驟之後，才能在微陣列晶片上做雜交反應，最後用偵測儀器分析結果，因而只能在實驗室裡使用。