S-PLEX Services

DISCOVER True Sensitivity

 

S-PLEX Sample-Testing and Assay Development 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