求翻译：未抗凝全血标本析出血清后，4000rpm离心5分钟，用日立7600-210全自动生化分析仪检测2次，将标本管水平放置2分钟后和将标本管颠倒混匀8次后分别检测2次。是什么意思？

Whole blood samples without anticoagulant after precipitation of serum, 4000rpm centrifugation for 5 minutes, with a Hitachi 7600-210 automatic biochemical analyzer 2, the level of the sample tube for 2 minutes and the sample tube upside down mixing 2 were detected after 8 time.

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After has not prevented clotting the whole blood specimen separation blood serum, the 4000rpm gentrifugalism 5 minutes, examine with the Hitachi 7600-210 completely automatic biochemistry analyzer 2 times, after lays aside the specimen tube level 2 minutes and inverts the specimen tube mixes uniform

No anticoagulation after total precipitation serum blood sample, 4000rpm centrifuge for 5 minutes, with Hitachi automatic biochemical Analyzer 7600-210 2, place the specimen tube level after 2 minutes and specimen tubes mix upside down after 8 test 2 times, respectively.

Whole blood samples without anticoagulant after precipitation of serum, 4000rpm centrifugation for 5 minutes, with a Hitachi 7600-210 automatic biochemical analyzer 2, the level of the sample tube for 2 minutes and the sample tube upside down mixing 2 were detected after 8 time.