Human Anti-MPO/p-ANCA ELISA Kit (HUFI02217)

Product Name:	Human MPO Autoantibodies (p-ANCA) ELISA Kit
Product Code:	HUFI02217
Size:	96 Assays
Alias:	Anti-MPO
Detection method:	Indirect ELISA
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human Anti-MPO concentrations in serum plasma and other biological fluids.
Sensitivity:	1.875ng/ml
Range:	3.125-200ng/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Human Anti-MPO and the recovery rates were calculated by comparing the measured value to the expected amount of Human Anti-MPO in samples.

Matrix	Recovery range(%)	Average(%)
Serum (n=5)	87-97	91
EDTA Plasma (n=5)	85-104	95
Heparin Plasma (n=5)	87-93	91

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human Anti-MPO and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample	1:2	1:4	1:8
Serum (n=5)	88-104%	86-99%	89-103%
EDTA Plasma (n=5)	89-100%	85-91%	84-94%
Heparin Plasma (n=5)	82-97%	82-95%	83-96%

CV(%):

Intra-Assay: CV<5%
Inter-Assay: CV<6%

Component	48T	96T	Storage
ELISA Microplate (Dismountable)	8×6	8×12	4°C for 6 months
Lyophilized Standard	1 vial	2 vials	4°C/-20°C
HRP-labeled Antibody (Concentrated, 100X)	60 µl	120 µl	4°C (Protect from light)
TMB Substrate	5 ml	10 ml	4°C (Protect from light)
Sample Dilution Buffer	10 ml	20 ml	4°C
Antibody Dilution Buffer	5 ml	10 ml	4°C
Stop Solution	5 ml	10 ml	4°C
Wash Buffer (25X)	15 ml	30 ml	4°C
Bradford Reagent	1 vial	1 vial	4°C
Plate Sealer	3 pieces	5 pieces	-

Other materials and equipment required:

Microplate reader with 450 nm wavelength filter
Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
Incubator
Deionized or distilled water
Absorbent paper
Buffer reservoir

*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Bring all reagents and samples to room temperature 30 minutes before use. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.

Step	Protocol
1.	Equilibrate the TMB substrate at room temperature for at least 30 minutes before use. Prepare a standard curve for each assay.
2.	Designate standard wells, test sample wells, and control (blank) wells on the pre-coated plate. It is recommended to measure each standard and sample in duplicate. Wash the plate twice before adding standards, samples, and controls.
3.	Aliquot 100 µl of standard solutions into the standard wells.
4.	Add 100 µl of Sample Dilution Buffer into the control (blank) well.
5.	Add 100 µl of properly diluted samples into the sample wells.
6.	Seal the plate with a cover and incubate at 37°C for 90 minutes.
7.	Remove the cover and wash plate 3 times with 350 µl Wash Buffer. Do NOT let the wells dry completely at any time.
8.	Add 100 µl of HRP-labelled antibody working solution into the bottom of each well (standard, test sample and blank wells) without touching the side walls.
9.	Seal the plate with a cover and incubate at 37°C for 30 minutes.
10.	Remove the cover and wash plate 5 times with 350 µl Wash Buffer. Let the Wash Buffer stay in the wells for 1–2 minutes per wash.
11.	Add 90 µl of TMB substrate into each well, cover the plate and incubate at 37°C in the dark for 10–20 minutes. As soon as a blue colour develops in the first 3–4 wells (most concentrated standards) and other wells show no obvious colour, proceed to the next step.
12.	Add 50 µl of Stop Solution into each well and mix thoroughly. The colour changes to yellow immediately.
13.	Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution.

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample Type	Protocol
Serum	If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Plasma	Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid	Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant	Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell lysates	Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Tissue homogenates	The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Tissue lysates	Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk	Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.