Lateral flow assay contained within a biopsy specimen collection bottle for qualitative visual detection of protein present in biopsy samples
A qualitative detection system and method for visual verification of the presence of human protein in a biopsy specimen collection bottle is disclosed. The system comprises a lateral flow assay assembly securely contained within the lid of a biopsy specimen collection bottle or secured at the bottom of the bottle. The lateral flow assay assembly comprises components that amplify in color intensity through a chromogenic reaction in the presence of certain proteins. A change in color of the components of the lateral flow assay assembly acts as a visual index to qualitatively confirm the placement of human tissue in the biopsy specimen collection bottle.
1. A visual verification method for confirming the presence of human protein in a sample comprising:
a. providing a specimen bottle and a corresponding lid;
b. securing a lateral flow assembly in the interior of the specimen bottle, the lateral flow assembly comprising one or more chromogenic substances;
c. introducing a sample and a solution comprising a fixative into the interior of the specimen bottle;
d. sealing the specimen bottle with the lid;
e. thereafter contacting the sample and fixative solution in the interior of the specimen bottle containing the lateral flow assembly comprising the one or more chromogenic substances;
f. observing whether a color change has occurred in the lateral flow assay assembly; and
g. correlating a color change in the lateral flow assay assembly with the presence of protein in the sample in the interior of the specimen bottle; and
h. correlating no color change in the lateral flow assay assembly with the absence of protein in the sample in the interior of the specimen bottle,
wherein the lateral flow assay assembly comprises a protein binding disc in the center of an application chemistry pad, a hydrophobic spacer film, an absorbent sink pad, and a hydrophobic film layer, wherein the application chemistry pad, the hydrophobic spacer film, the absorbent sink pad, and the hydrophobic film layer each comprises a port allowing fluid to flow from the center of the application pad to adjacent pads and layers.
2. The method of claim 1 wherein the protein binding disc comprises a nitrocellulose membrane.
3. The method of claim 2 , wherein the application chemistry pad comprises the one or more chromogenic substances.
4. The method of claim 3 , wherein the one or more chromogenic substances comprise Coomassie Brilliant Blue, Coomassisie R-250 (Red) and G-250 dyes green (colloidal coomassie dyes), Coomassie, fluorescent, silver, and negative stains, Pierce BCA 660 nm (polyhydroxybenzenesulfonephthalein-type dye) and combinations thereof.
5. The method of claim 1 , further comprising introducing one or more activation solutions into the interior of the specimen bottle along with the sample and the fixative solution.
6. The method of claim 5 , wherein the one or more activation solutions comprise BSA lyophilized powder, acetic acid, phosphoric acid, methanol/acetic acid/water mixture and combinations thereof.
7. The method of claim 1 wherein the lateral flow assay assembly is secured within the undersurface of the lid of the specimen bottle.
8. The method of claim 1 wherein the lateral flow assay assembly is secured to the bottom of the interior of the specimen bottle.
9. The method of claim 1 wherein the specimen bottle comprises a clear specimen bottle.
10. The method of claim 1 wherein further the lateral flow assay changes color in the presence of protein.
11. A lateral flow assay assembly for detecting presence of protein in a sample, comprising:
a protein binding disc;
an application chemistry pad comprising a space in the center of the pad, wherein the protein binding disc is matingly engaged with the application chemistry pad within the space in the application chemistry pad;
an adsorbent sink pad;
a hydrophobic spacer film disposed between the application chemistry pad and the adsorbent sink pad; and
a hydrophobic film layer,
wherein the adsorbent sink pad, the hydrophobic spacer film and the hydrophobic film layer each comprises a port allowing fluid to flow from the center of the application chemistry pad to adjacent pads and layers.
12. The lateral flow assay assembly of claim 11 , wherein the protein binding disc comprises a nitrocellulose membrane.
13. The lateral flow assay assembly of claim 12 , wherein the application chemistry pad comprises one or more chromogenic substances.
14. The lateral flow assay assembly of claim 13 , wherein the one or more chromogenic substances comprise Coomassie Brilliant Blue, Coomassisie R-250 (Red) and G-250 dyes green (colloidal coomassie dyes), Coomassie, fluorescent, silver, and negative stains, Pierce BCA 660 nm (polyhydroxybenzenesulfonephthalein-type dye) and combinations thereof.
15. A specimen bottle having a lateral flow assay assembly for detecting presence of protein in a sample, comprising:
a specimen bottle; and
a lateral flow assembly comprising:
a protein binding disc;
an application chemistry pad comprising a space in the center of the pad, wherein the protein binding disc is matingly engaged with the application chemistry pad within the space in the application chemistry pad;
an adsorbent sink pad;
a hydrophobic spacer film layer disposed between the application chemistry pad and the adsorbent sink pad; and
a hydrophobic film layer,
wherein the adsorbent sink pad, the hydrophobic spacer film and the hydrophobic film layer each comprise a port allowing fluid to flow from the center of the application chemistry pad to adjacent pads and layers.
16. The specimen bottle having a lateral flow assay assembly of claim 15 , wherein the protein binding disc comprises a nitrocellulose membrane.
17. The specimen bottle having a lateral flow assay assembly of claim 16 , wherein the application chemistry pad comprises one or more chromogenic substances.
18. The specimen bottle having a lateral flow assay assembly of claim 17 , wherein the one or more chromogenic substances comprise Coomassie Brilliant Blue, Coomassisie R-250 (Red) and G-250 dyes green (colloidal coomassie dyes), Coomassie, fluorescent, silver, and negative stains, Pierce BCA 660 nm (polyhydroxybenzenesulfonephthalein-type dye) or combinations thereof.
19. The specimen bottle having a lateral flow assay assembly of claim 15 further comprising a lid, wherein the lateral flow assay assembly is secured to the undersurface of the lid.
20. The specimen bottle having a lateral flow assay assembly of claim 15 , wherein the lateral flow assay assembly is secured to the bottom of the interior of the specimen bottle.