S-PLEX Services
S-PLEX assays achieve femtogram/mL sensitivity with the precision and reliability you expect from MSD. S-PLEX assay development and sample-testing services are available to clients who need even more sensitivity than is currently available from other MSD assays. Now you can detect and quantify very low abundance proteins in your samples with the confidence that you are specifically measuring your protein of interest. Our experts will work with you to understand your sample-testing needs and develop a plan that is right for you.
For Research Use Only. Not for use in diagnostic procedures.
Currently we have the following assays available for sample-testing services.
Analyte
(Human) |
Lower Limit of Detection (LLOD)
(fg/mL) |
Lower Limit of Quantitation (LLOQ)
(fg/mL) |
Upper Limit of Quantitation (ULOQ)
(fg/mL) |
| CTLA-4 |
32 |
130 |
170,000 |
| Eotaxin-3 |
59 |
141 |
266,000 |
| G-CSF |
44 |
120 |
410,000 |
| GFAP |
330 |
990 |
2,300,000 |
| GM-CSF |
1.9 |
4.4 |
21,000 |
| IFN-α2a |
4.9 |
29 |
52,000 |
| IFN-β |
17 |
64 |
81,000 |
| IFN-γ |
5.3 |
16 |
15,000 |
| IL-1β |
19 |
98 |
70,000 |
| IL-2 |
7.3 |
21 |
30,000 |
| IL-3 |
4.6 |
21 |
17,000 |
| IL-4 |
0.54 |
4.9 |
3,300 |
| IL-5 |
2.02 |
5.9 |
19,000 |
| IL-6 |
1.1 |
1.3 |
4,400 |
| IL-9 |
8.6 |
39 |
68,000 |
| IL-10 |
1.4 |
9.8 |
12,000 |
| IL-12p70 |
2.3 |
6.2 |
18,000 |
| IL-13 |
9.1 |
24 |
53,000 |
| IL-17A |
13 |
60 |
140,000 |
| IL-22 |
2.2 |
7.6 |
24,000 |
| Neurofilament L |
1,700 |
8,480 |
1,400,000 |
| SARS-CoV-2 N |
62 |
172 |
650,000 |
| SARS-CoV-2 Spike |
95 |
350 |
260,000 |
| Tau (pT181) |
77 |
460 |
990,000 |
| Tau (pT217) |
880 |
5,900 |
2,400,000 |
| Tau (pT231) |
3,100 |
15,000 |
15,000,000 |
| Tau (total) |
12 |
43 |
90,000 |
| TNF-α |
6.8 |
12 |
42,000 |
| TNF-β |
3.3 |
11 |
16,000 |
| TSLP |
9.1 |
34 |
49,000 |
For details on performance of some of the S-PLEX assays in detecting low abundance proteins, you can download these posters:
S-PLEX Posters and Publications