Human NGAL(Neutrophil Gelatinase Associated Lipocalin) ELISA Kit
人中性粒细胞明胶酶相关脂质运载蛋白(NGAL)酶联免疫吸附测定试剂盒
规格: | / 96T / 48T / 96T*5 |
价格: | / ¥3200 / ¥2300 / ¥13600 |
货号:E-EL-H6127
反应性: 人
检测范围: 31.25~2000 pg/mL
灵敏度: 18.75 pg/mL
用途
该试剂盒用于体外定量检测人中NGAL浓度
检测原理
本试剂盒采用双抗体夹心ELISA法。用抗人NGAL抗体包被于酶标板上,实验时样品或标准品中的人NGAL会与包被抗体结合,游离的成分被洗去。依次加入生物素化的抗人NGAL抗体和辣根过氧化物酶标记的亲和素。抗人NGAL抗体与结合在包被抗体上的人NGAL结合、生物素与亲和素特异性结合而形成免疫复合物,游离的成分被洗去。加入显色底物(TMB),TMB在辣根过氧化物酶的催化下呈现蓝色,加终止液后变成黄色。用酶标仪在450nm波长处测OD值,NGAL浓度与OD450值之间呈正比,通过绘制标准曲线计算出样品中NGAL的浓度。
反应类型 | 夹心法 |
规格 | 96T |
反应时间 | 3.5h |
反应性 | 人 |
检测方法 | Colormetric |
检测范围 | 31.25—2000 pg/mL |
灵敏度 | 18.75 pg/mL |
样本体积 | 100μL |
样本类型 |
特异性
可检测样本中的人NGAL,且与其它相关蛋白无明显交叉反应。
重复性
板内,板间变异系数均<10%。
典型数据
由于实验操作条件的不同(如操作者、移液技术、洗板技术和稳定条件等),标准曲线的OD值会有所差异。以下数据和曲线仅供参考,实验者需根据自己的实验建立标准曲线。
(pg/mL) | O.D | Average | Corrected |
---|---|---|---|
2000 | 2.501 2.517 |
2.509 | 2.42 |
1000 | 1.601 1.643 |
1.622 | 1.533 |
500 | 0.992 0.97 |
0.981 | 0.892 |
250 | 0.54 0.552 |
0.546 | 0.457 |
125 | 0.288 0.284 |
0.286 | 0.197 |
62.5 | 0.201 0.185 |
0.193 | 0.104 |
31.25 | 0.147 0.165 |
0.156 | 0.067 |
0 | 0.09 0.087 |
0.089 | -- |
精密度
板内精密度:低浓度样本,中浓度样本和高浓度样本分别在1块板子上检测20次。
板间精密度:低浓度样本,中浓度样本和高浓度样本分别在3块板子上检测20次。
Intra-assay Precision | Inter-assay Precision | |||||
---|---|---|---|---|---|---|
Sample | 1 | 2 | 3 | 1 | 2 | 3 |
n | 20 | 20 | 20 | 20 | 20 | 20 |
Mean (pg/mL) |
98.11 | 250.16 | 953.57 | 107.72 | 251.70 | 944.02 |
Standard
deviation |
5.69 | 10.06 | 45.01 | 6.16 | 11.68 | 51.45 |
C V (%) | 5.80 | 4.02 | 4.72 | 5.72 | 4.64 | 5.45 |
回收率
分别往5个不同样本中添加已知浓度的目标蛋白,做回收实验,得出回收率范围和平均回收率。
Sample Type | Range (%) | Average Recovery (%) |
---|---|---|
Serum (n=5) | 94-109 | 100 |
EDTA plasma (n=5) | 88-101 | 94 |
Cell culture media (n=5) | 95-109 | 102 |
线性
分别往5个样本中添加已知浓度的目标蛋白,做回收实验,得出回收率范围及平均回收率。将5个样本分别稀释2倍,4倍,8倍,16倍做回收实验,得出回收率范围及平均回收率。
Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
---|---|---|---|---|
1:2 | Range (%) | 89-102 | 95-107 | 87-101 |
Average (%) | 97 | 101 | 94 | |
1:4 | Range (%) | 89-105 | 99-113 | 85-95 |
Average (%) | 96 | 104 | 90 | |
1:8 | Range (%) | 88-101 | 97-111 | 90-105 |
Average (%) | 95 | 104 | 97 | |
1:16 | Range (%) | 88-101 | 96-112 | 90-102 |
Average (%) | 95 | 103 | 95 |
试剂盒组成及保存
未拆封的试剂盒可在4℃保存一周;如果一周以后才使用试剂盒,请拆开试剂盒按照下表中的条件分别保存各组分。
中文名称 | 英文名称 | 规格 | 保存条件 |
---|---|---|---|
ELISA酶标板(可拆卸) | Micro ELISA Plate(Dismountable) | 8 孔×12 条 | -20℃,可存放6个月 |
冻干标准品 | Reference Standard | 2 支 | |
浓缩生物素化抗体(100×) | Concentrated Biotinylated Detection Ab | 1支 120 μL | |
浓缩HRP酶结合物(100×) | Concentrated HRP Conjugate | 1支 120 μL | -20℃(避光),可存放6个月 |
标准品&样品稀释液 | Reference Standard & Sample Diluent | 1瓶 20 mL | 4℃.可存放6个月 |
生物素化抗体稀释液 | Biotinylated Detection Ab Diluent | 1瓶 14 mL | |
酶结合物稀释液 | HRP Conjugate Diluent | 1瓶 14 mL | |
浓缩洗涤液(25×) | Concentrated Wash Buffer (25×) | 1瓶 30 mL | |
底物溶液(TMB) | Substrate Reagent | 1瓶 10 mL | 4℃(避光) |
反应终止液 | Stop Solution | 1瓶 10 mL | 4℃ |
封板覆膜 | Plate Sealer | 5 张 | |
产品说明书 | Product Description | 1 份 | |
质检报告 | Certificate of Analysis | 1 份 |
说明:所有试剂瓶盖须旋紧以防止蒸发和微生物的污染。
试剂体积以实际发货版说明书为准。相关试剂在分装时会比标签上标明的体积稍多一些,请在使用时量取而非直接倒出。
试验所需自备物品
- 1. 酶标仪(450nm波长滤光片)
- 2. 高精度移液器,EP管及一次性吸头:0.5-10 μL, 2-20 μL, 20-200 μL, 200-1000 μL
- 3. 37℃恒温箱,双蒸水或去离子水
- 4. 吸水纸
操作步骤
|
1.对应板孔中加入100μL标准品工作液或样本,37℃孵育90分钟 |
2.弃掉板内液体后,立即加入100μL生物素化抗体工作液,37℃孵育60分钟 | |
3.弃掉板内液体,洗板3次 | |
4.每孔加入100μL HRP酶结合物工作液,37℃孵育30分钟,弃掉板内液体,洗板5次 | |
5.每孔加入90μL底物溶液,37℃孵育15分钟 | |
6.每孔加入50μL终止液 | |
7.立即在450nm波长下读数,处理数据 |
客户发表文献
- 文献: Identification of key candidate biomarkers for severe influenza infection by integrated bioinformatical analysis and initial clinical validation
样品类型: Plasma - 文献: Plasma lipocalin-2/NGAL is stable over 12 weeks and is not modulated by exercise or dieting
样品类型: Plasma - 文献: Gingival crevicular fluid lipocalin-2 and semaphorin3A in stage III periodontitis: Non-surgical periodontal treatment effects
样品类型: gingival crevicular fluid (GCF) - 文献: Biomarkers of Uremic Cardiotoxicity
样品类型: serum - 文献: Serum neutrophil gelatinase-associated lipocalin (NGAL) as a biomarker for predicting high dose methotrexate associated acute kidney injury in children with acute lymphoblastic leukemia
样品类型: Serum - 文献: Urinary NGAL, IGFBP-7, and TIMP-2: novel biomarkers to predict contrast medium-induced acute kidney injury in children
样品类型: Serial urinary samples - 文献: Effects of pneumoperitoneum on kidney injury biomarkers: A randomized clinical trial
样品类型: Plasma - 文献: Renal Stem Cells, Renal Resistive Index, and Neutrophil Gelatinase Associated Lipocalin Changes After Revascularization in Patients With Renovascular Hypertension and Ischemic Nephropathy
样品类型: serum - 文献: The role of serum and urinary biomarkers in the diagnosis of early diabetic nephropathy in patients with type 2 diabetes
样品类型: urinary,serum - 文献: Association of plasma neutrophil gelatinase-associated lipocalin and thoracic aorta calcification in maintenance hemodialysis patients with and without diabetes
样品类型: plasma - 文献: Assessment of acute aerobic exercise in the morning versus evening on asprosin, spexin, lipocalin-2, and insulin level in overweight/obese versus normal weight adult men
样品类型: Serum - 文献: Association of plasma neutrophil gelatinase-associated lipocalin with parameters of CKD–MBD in maintenance hemodialysis patients
样品类型: plasma - 文献: Evaluation of early biomarkers of renal dysfunction in diabetic patients.
样品类型: Urinary - 文献: Perinatal lipocalin-2 profile at the extremes of fetal growth
样品类型: milk,serum - 文献: Prognostic utility of neutrophil gelatinase associated lipocalin in cardiac ICU: A prospective study
样品类型: serum,urinary - 文献: Impact of colloids or crystalloids in renal function assessed by NGAL and KIM-1 after hysterectomy: randomized controlled trial
样品类型: Urine - 文献: Impact of acute versus repetitive moderate intensity endurance exercise on kidney injury markers
样品类型: urine - 文献: Impact of acute versus prolonged exercise and dehydration on kidney function and injury
样品类型: Urine - 文献: Assessing urinary levels of IL-18, NGAL and albumin creatinine ratio in patients with diabetic nephropathy
样品类型: Urine