Serum specificity metabolite spectrum for patient with lung cancer, and building method thereof
A specific, serum-based technology, applied in the field of metabolomics and lung cancer, can solve the problem of less lung cancer and achieve the effect of low cost, high specificity, good specificity and sensitivity
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[0024] The present invention is further described below in conjunction with embodiment.
[0025] 1. Sample collection: collect 5 mL of abdominal blood samples from healthy and normal subjects and lung cancer patients before and 7 days after surgery, put them in sterile coagulation-promoting BD vacuum blood collection tubes, centrifuge at 2500 rpm, 4 ° C for 5 min, take the upper serum, and store in -80 °C refrigerator for use. A total of 30 serum samples were collected in the normal group, and 30 serum samples were collected in each of the lung cancer preoperative and postoperative groups.
[0026] 2 Processing of liquid chromatography-mass spectrometry samples: thaw the cryopreserved serum samples at room temperature and shake well, take 100 μL of samples and add 300 μL of methanol, vortex for 30 s, and stand at 4 °C for 20 min; all samples are refrigerated and centrifuged (12000 rpm, 4 ℃, 15 min), take 200 μL of the supernatant, and transfer it to an injection vial for late...
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