PRINCIPLE OF TEST
This MT ELISA kit is intended Laboratory for Research use only and is not for use in diagnostic or
therapeutic procedures.The Stop Solution changes the color from blue to yellow and the intensity of
the color is measured at 450 nm using a spectrophotometer. In order to measure the concentration
of MT in the sample, this MT ELISA Kit includes a set of calibration standards. The calibration
standards are assayed at the same time as the samples and allow the operator to produce a
standard curve of Optical Density versus MT concentration. The concentration of MT in the samples
is then determined by comparing the O.D. of the samples to the standard curve.
SAMPLE COLLECTION AND STORAGES
Serum - Use a serum separator tube and allow samples to clot for 30 minutes before centrifugation
for 10 minutes at approximately 3000×g. Remove serum and assay immediately or aliquot and store
samples at -20℃ or -80℃.Avoid repeated freeze-thaw cycles
Plasma - Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples for 30
minutes at 3000×g at 2-8℃ within 30 minutes of collection. Store samples at -20℃or -80℃. Avoid
repeated freeze-thaw cycles.
Cell culture supernates and other biological fluids - Remove particulates by centrifugation and
assay immediately or aliquot and store samples at -20℃or -80℃. Avoid repeated freeze-thaw
Note: The samples shoule be centrifugated dequately and no hemolysis or granule was allowed.
MATERIALS REQUIRED BUT NOT SUPPLIED
- Standard microplate reader(450nm)
- Precision pipettes and Disposable pipette tips.
- 37 ℃ incubator
- Do not substitute reagents from one kit to another. Standard, conjugate and microplates are
matched for optimal performance. Use only the reagents supplied by manufacturer.
- Do not remove microplate from the storage bag until needed. Unused strips should be stored at
2-8°C in their pouch with the desiccant provided.
- Mix all reagents before using.
- Remove all kit reagents from refrigerator and allow them to reach room temperature ( 20-25°C)MATERIALS SUPPLIED
20X Wash solution
Chromogen Solution A
Chromogen Solution B
Closureplate membrane 2
Note: Standard (S0 → S5) concentration was followed by:0,5,10,20,40,80 pg/ml.
20×wash solution:Dilute with Distilled or deionized water 1:20.
- Prepare all re a g e nts before starting assay procedure. It is recommended that all Standards
and Samples be added in duplicate to the Microelisa Stripplate.
- Add standard: Set Standard wells, testing sample wells. Add standard 50μl to standard well.
- Add Sample: Add testing sample 10μl then add Sample Diluent 40μl to testing sample well;
Blank well doesn’t add anyting.
- Add 100μl of HRP-conjugate reagent to each well, cover with an adhesive strip and incubate for
60 minutes at 37°C.
- Aspirate each well and wash, repeating the process four times for a total of five washes. Wash
by filling each well with Wash Solution (400μl) using a squirt bottle, manifold dispenser or
autowasher. Complete removal of liquid at each step is essential to good performance. After the
last wash, remove any remaining Wash Solution by aspirating or decanting. Invert the plate and blot
it against clean paper towels.
- Add chromogen solution A 50μl and chromogen solution B 50μl to each well. Gently mix and
incubate for 15 minutes at 37°C. Protect from light.
- Add 50μl Stop Solution to each well. The color in the wells should change from blue to yellow. If
the color in the wells is green or the color change does not appear uniform, gently tap the plate to
ensure thorough mixing.
- Read the Optical Density (O.D.) at 450 nm using a microtiter plate reader within 15 minutes.
CALCULATION OF RESULTS
- This standard curve is used to determine the amount in an unknown sample. The standard curve
is generated by plotting the average O.D. (450 nm) obtained for each of the six standard
concentrations on the vertical (Y) axis versus the corresponding concentration on the horizontal (X)
- First, calculate the mean O.D. value for each standard and sample. All O.D. values, are subtracted
by the mean value of the zero standard before result interpretation. Construct the standard curve
using graph paper or statistical software.
- To determine the amount in each sample, first locate the O.D. value on the Y-axis and extend a
horizontal line to the standard curve. At the point of intersection, draw a vertical line to the X-axis
and read the corresponding concentration.
- Any variation in operator, pipetting and washing technique, incubation time or temperature, and
kit age can cause variation in result. Each user should obtain their own standard curve.
- The sensitivity by this assay is 1.0 pg/ml.
- Standard curve