Detection devices and related methods of use

1. A device comprising:

a. a substrate comprising a surface;

b. a non-fouling polymer layer on the surface, wherein the non-fouling polymer layer comprises a plurality of brush molecules;

c. at least one capture region on the polymer layer, comprising at least one capture agent non-covalently bound to the polymer layer, wherein the at least one capture agent binds a target in a sample and the at least one capture agent remains bound to the polymer layer when exposed to the sample; and

d. at least one labile region on the polymer layer, comprising at least one detection agent and an excipient, wherein the at least one detection agent solubilizes upon contact with the sample and labels the target in the sample;

wherein the capture region and the labile region are spatially separated.

2. The device according to claim 1 , wherein at least one of the plurality of brush molecules comprises a monomer core group.

3. The device according to claim 2 , wherein the monomer core group is selected from styrenes, acrylonitriles, acetates, acrylates, methacrylates, acrylamides, methacrylamides, vinyl alcohols, vinyl acids, and combinations thereof.

4. The device according to claim 1 , wherein at least one of the plurality of brush molecules comprises a protein-resistant head group.

5. The device according to claim 4 , wherein the protein-resistant head group comprises a hydrophilic head group or a kosmotrope.

6. The device according to claim 5 , wherein the protein-resistant head group comprises a saccharide, an oligosaccharide, tri(propyl sulfoxide), hydroxyl, glycerol, phosphorylcholine, tri(sarcosine), N-acetylpiperazine, betaine, carboxybetaine, sulfobetaine, permethylated sorbitol, —CH 2 N + (CH 3 ) 2 CH 2 CH 2 CH 2 SO 3 − , hexamethylphosphoramide, or poly(ethylene glycol).

7. The device according to claim 1 , wherein the non-fouling polymer layer comprises poly(oligo(ethylene glycol)methyl methacrylate).

8. The device according to claim 1 , comprising a plurality of capture regions, each capture region comprising at least one capture agent.

9. The device according to claim 8 , wherein the plurality of capture regions comprise at least two different capture agents.

10. The device according to claim 8 , wherein each of the plurality of capture regions comprises a different capture agent.

11. The device according to claim 1 , comprising a plurality of labile regions, each labile region comprising at least one detection agent.

12. The device according to claim 1 , wherein at least one labile region further comprises heparin an anticoagulant.

13. The device according to claim 1 , wherein the substrate comprises glass, silicon, a metal oxide, or a polymer.

14. The device according to claim 1 , further comprising a linking layer between the substrate and the polymer layer.

15. A method of manufacturing a device according to claim 1 , the method comprising:

a. providing a substrate comprising a surface;

b. forming a non-fouling polymer layer on the surface, wherein the non-fouling polymer layer comprises a plurality of brush molecules;

c. printing at least one capture agent onto the polymer layer that is non-covalently bound to the polymer layer, wherein the at least one capture agent binds a target in a sample and the at least one capture agent remains bound to the polymer layer when exposed to the sample; and

d. printing at least one detection agent and at least one excipient onto the polymer layer, wherein the at least one detection agent solubilizes upon contact with the sample and labels the target in the sample;

wherein the capture agent is printed onto the polymer layer in a region that is spatially separated from the detection agent and excipient.

16. A method of screening for a disease or a disorder in a subject comprising:

a. obtaining a biological sample from the subject;

b. contacting the biological sample with the device of claim 1 for a time sufficient to allow the detection agent in the labile region to solubilize;

c. detecting the presence of the disease or disorder, wherein a detectable signal on at least one capture region on the device indicates the presence of the disease or disorder in the subject.

17. A diagnostic assay for determining a disease, a disorder, or a biological state in a subject comprising:

a. obtaining a biological sample from the subject;

b. contacting the biological sample with the device of claim 1 for a time sufficient to allow the detection agent in the labile region to solubilize;

c. detecting the presence of the disease, a disorder, or biological state,

wherein a detectable signal on at least one capture region on the device indicates the presence of the disease, disorder, or biological state in the subject.

18. The diagnostic assay of claim 17 , wherein the assay is a point-of-care assay.

19. A kit comprising the device according to claim 1 , a set of buffers and/or reagents, and instructions for use.