Simultaneous collection of DNA and non-nucleic analytes
First Claim
1. A method for obtaining and detecting a genomic marker and an extracellular analyte from a single collection step, said method comprising:
- (i) collecting a sample onto a bibulous solid support having a fibrous matrix, said sample comprising both (a) whole cells containing a genomic marker and (b) an extracellular analyte;
(ii) selectively obtaining extracellular analyte under conditions in which the genomic marker remains in cells within the fibrous matrix of the solid support;
(iii) obtaining genomic marker from the solid support by lysing the whole cells and freeing genomic marker from the fibrous matrix of the solid support; and
, (iv) detecting the analyte and genomic marker.
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Abstract
This invention provides for a rapid and convenient method of simultaneous collection of both genomic and diagnostic information from a single sample on a bibulous pad by differential extraction of the diagnostic information from the genomic information. It is a surprising discovery of this invention that a PCR assay on the contents of the bibulous pad provides results comparable in reliability, specificity, and sensitivity to the best available serum (blood) based assays. The assays of this invention can be used to confirm each other, either by detecting the genomic information leading to the diagnostic information, or by detecting in the genomic information, a predisposition to a disease and confirming the presence of the disease through diagnostic testing.
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Citations
22 Claims
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1. A method for obtaining and detecting a genomic marker and an extracellular analyte from a single collection step, said method comprising:
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(i) collecting a sample onto a bibulous solid support having a fibrous matrix, said sample comprising both (a) whole cells containing a genomic marker and (b) an extracellular analyte;
(ii) selectively obtaining extracellular analyte under conditions in which the genomic marker remains in cells within the fibrous matrix of the solid support;
(iii) obtaining genomic marker from the solid support by lysing the whole cells and freeing genomic marker from the fibrous matrix of the solid support; and
,(iv) detecting the analyte and genomic marker. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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- 5. A method of obtaining a genomic marker and an extracellular analyte from a single collection step, wherein the extracellular analyte is selected from the group consisting of therapeutic drugs, drugs of abuse, anti-infectious drugs, and disease markers.
Specification