Tribioscience’s Fast Human Phospho Tau Thr181 (p-Tau-181) ELISA is designed to quantitatively detect human p-Tau-181 levels in serum, plasma, CSF, and other biological samples. The main feature is that the kit uses our novel proprietary approaches to combine samples and detections into a one-step instead of the complicated traditional methods. It makes the assay simple, easy, accurate, and fast. The Hands-on time can be within 2 hours, with no need for 4-5 hours (Fig. 1). The detection range is from 0.3 to 243 ng/mL. The levels of human p-Tau-181 samples are parallel to the standard curves obtained using the kit standards linearly. Therefore, the kit can be used to determine relative mass values for natural human p-Tau-181 protein.
Typical Data
This standard curve (R2=1.000) is provided for demonstration only. A standard curve should be generated for each set of samples assayed. Fig. 3 is an example of typical Data.
Sensitivity
The minimum detectable dose (MOD) of human ptau-181 is typically 300 pg/ml.
The Intra-assay CV and the Inter-assay CV are ˂10%.
Specificity
This assay recognizes natural and recombinant human pTau-181. No cross-reactivity with others.
Simple Procedures (Fig. 1)
Simple Standard Preparation
Accurate Standard Curve
Kit Content and Storage Conditions
Part
Part#
Description
Storage of Opened/Reconstituted
Human p-Tau-181 Microplate
TBS3294A
96 well polystyrene microplate (12 strips of 8 wells) coated with a polyclonal antibody specific for human p-Tau181.
Return unused wells to the foil pouch. Reseal along the entire edge of the zip-seal. May be stored for up to 1 month at 2-8 °C.
Human p-Tau-181 Standard
TBS3294B
80 µL of Recombinant human p-Tau181 standard (2.43 μg/mL).
Aliquot and store at -20 ℃ for up to 1 month in a manual defrost the freezer. Avoid repeated freeze-thaw cycles.
Detection A
TBS3294C
25 µL of p-Tau-181 mAb-HRP Conjugate (100x).
May be stored for up to 3 months at 2-8 °C.
Assay Diluent
TBS3294D
15 mL of a buffered protein base with preservatives.
Wash Buffer
TBS3000W
12 mL of concentrated solution (10x).
TMB Substrate
TBS3000T
12 mL of ultra-sensitive TMB substrate.
Stop Solution
TBS3000S
6 mL of 2 N sulfuric acid.
Store the unopened kit at 2-8 ℃. Do not use past kit expiration dates.
The kit contains sufficient materials to run an ELISA on one 96-well plate.
Alternative names: pt181, ptau181, P-tau181, tau181, Phospho Tau 181, Phosphorylated Tau 181
