Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving virus or bacteriophage
Patent
1995-04-10
1997-01-07
Jones, W. Gary
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving virus or bacteriophage
435 912, 4352351, 604409, 604410, C12Q 170, C12P 1934, C12N 700
Patent
active
055915736
ABSTRACT:
Systems, processes and devices are provided which are useful for testing blood or plasma donations to detect those specific donations which are contaminated by virus above a predetermined level. An apparatus and process is described which forms individual, separately sealed, and connected sample-containing pouches from a flexible hollow tubing segment connected to a fluid donation container. The tubing segment is sealed at spaced-apart intervals along its length, with tubing segment portions in the intervals between the seals defining pouches, each of which contains a portion of a plasma sample. The contents of the pouches are formed into pools which are subsequently tested for virus contamination by a high sensitivity test such as PCR. When a pool tests positive, indicating it is contaminated by a virus, a further pouch is removed from each of the tubing segments used to form the initial pool. Subsequent pouches are divided into approximately equal sized subgroups and their contents separately formed into subpools. A selected one of the subgroup pools is then tested for virus contamination. The test process is iterated, with each pool that tests positive being further subdivided into two successively smaller subgroups, until two final subgroups are formed, each comprising a single pouch corresponding to a single plasma donation. The final two pouches are subsequently PCR tested in order to determine and uniquely identify the corresponding contaminated donation.
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Chlebowski Michael E.
Heldebrant Charles M.
Matveld H. Edward
Whalen John J.
Alpha Therapeutic Corporation
Atzel Amy
Jones W. Gary
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