Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本)
Mini Samples ELISA Kit for Cross Linked C-Telopeptide Of Type II Collagen (CTXII)
CTX-II; CTX2
- 编号MEA686Ra
- 物种Rattus norvegicus (Rat,大鼠) 相同的名称,不同的物种。
- 实验方法竞争抑制
- 反应时长3h
- 检测范围98.8-8,000pg/mL
- 灵敏度最小可检测剂量小于等于39.4pg/mL.
- 样本类型Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
- 下载 英文说明书 中文说明书
- 规格 48T96T 96T*5 96T*10 96T*100
- 价格 ¥ 3448 ¥ 4926 ¥ 22167 ¥ 41871 ¥ 344820
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特异性
本试剂盒用于检测Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本),经检测与其它相似物质无明显交叉反应。
由于受到技术及样本来源的限制,不可能完成对所有相关或相似物质交叉反应检测,因此本试剂盒有可能与未经检测的其它物质有交叉反应。
回收率
分别于定值血清及血浆样本中加入一定量的Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本)(加标样品),重复测定并计算其均值,回收率为测定值与理论值的比率。
样本 | 回收率范围(%) | 平均回收率(%) |
serum(n=5) | 98-105 | 101 |
EDTA plasma(n=5) | 78-90 | 85 |
heparin plasma(n=5) | 80-90 | 85 |
精密度
精密度用样品测定值的变异系数CV表示。CV(%) = SD/mean×100
批内差:取同批次试剂盒对低、中、高值定值样本进行定量检测,每份样本连续测定20 次,分别计算不同浓度样本的平均值及SD值。
批间差:选取3个不同批次的试剂盒分别对低、中、高值定值样本进行定量测定,每个样本使用同一试剂盒重复测定8次,分别计算不同浓度样本的平均值及SD值。
批内差: CV<10%
批间差: CV<12%
线性
在定值血清及血浆样本内加入适量的Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本),并倍比稀释成1:2,1:4,1:8,1:16的待测样本,线性范围即为稀释后样本中Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本)含量的测定值与理论值的比率。
样本 | 1:2 | 1:4 | 1:8 | 1:16 |
serum(n=5) | 80-95% | 97-105% | 98-105% | 97-105% |
EDTA plasma(n=5) | 95-103% | 81-91% | 84-104% | 99-105% |
heparin plasma(n=5) | 84-96% | 92-99% | 90-98% | 91-99% |
稳定性
经测定,试剂盒在有效期内按推荐温度保存,其活性降低率小于5%。
为减小外部因素对试剂盒破坏前后检测值的影响,实验室的环境条件需尽量保持一致,尤其是实验室内温度、湿度及温育条件。其次由同一实验员来进行操作可减少人为误差。
实验流程
1. 实验前标准品、试剂及样本的准备;
2. 加样(标准品及样本)25µL后,立即加入检测溶液A25µL,
37°C孵育1小时;
3. 甩干,洗板3次;
4. 加检测溶液B50µL,37°C孵育30分钟;
5. 洗板5次;
6. 加TMB底物50µL,37°C孵育10-20分钟;
7. 加终止液25µL,立即450nm读数。
实验原理
本试剂盒应用竞争抑制酶联免疫分析法测定标本中待测物质水平。将Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本)单克隆抗体包被微孔板,制成固相载体,往包被抗体的微孔中同时加入生物素标记的抗原和待测抗原(标准品或样本),待测抗原与生物素标记抗原对特异性抗体进行竞争结合。温育后经洗涤去掉未结合物,然后加入HRP标记的亲和素,经过温育和彻底洗涤后加入底物TMB显色。TMB在过氧化物酶的催化下转化成蓝色,并在酸的作用下转化成最终的黄色。待测标本浓度越高,标记抗原和抗体的结合就越受到抑制,显色愈浅。显色的深浅与酶量呈正相关,而与样品中待测物质含量呈负相关。用酶标仪在450nm波长下测定吸光度(O.D.值),计算样品浓度。
相关产品
编号 | 适用物种:Rattus norvegicus (Rat,大鼠) | 应用(仅供研究使用,不用于临床诊断!) |
MEA686Ra | Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法,小样本) | Enzyme-linked immunosorbent assay for Antigen Detection. |
CEA686Ra | Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒(酶联免疫吸附试验法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMA686Ra | Ⅱ型胶原交联羧基端肽(CTXII)等多因子检测试剂盒(流式荧光发光法) | FLIA Kit for Antigen Detection. |
KSA686Ra11 | Ⅱ型胶原交联羧基端肽(CTXII)检测试剂盒DIY材料(酶联免疫吸附试验法) | Main materials for "Do It (ELISA Kit) Yourself". |
参考文献
杂志 | 参考文献 |
Cartilage | Comparison of Intra-articular Injection of Hyaluronic Acid and N-Acetyl Cysteine in the Treatment of Knee Osteoarthritis A Pilot Study [1947603516675915.abstract] |
BioMed Research International | Decreased Plasma COMP and Increased Plasma CTX-II Levels in a Chinese Pseudoachondroplasia Family with Novel COMP Mutation [pubmed:29104872] |
In Vivo | Osteochondral Repair Using Porous Three-dimensional Nanocomposite Scaffolds in a Rabbit Model [pubmed:28882956] |
Aging Cell | Transthyretin deposition promotes progression of osteoarthritis [pubmed:28941045] |
Molecular Medicine Reports | Mori Folium water extract alleviates articular cartilage damages and inflammatory responses in monosodium iodoacetate‑induced osteoarthritis rats [pubmed:29067461] |
Experimental and Clinical Sciences International online journal for advances in science | Schisandrae Fructus ethanol extract ameliorates inflammatory responses and articular cartilage damage in monosodium iodoacetate-induced osteoarthritis in rats. [pubmed:28507472] |
Advances in Clinical and Experimental Medicine | Fibulin-3 and other cartilage metabolism biomarkers in relationship to calprotectin (MRP8/14) and disease activity in rheumatoid arthritis patients treated with … [68362.pdf] |
Journal of Orthopaedic Surgery and Research | The levels of urine CTX-II, C2C, and PYD in children patients with Kashin-Beck disease in Qinghai Province of China [Pubmed: 30635000] |
Nutrients | The Preventive Effects of Greenshell Mussel (Perna canaliculus) on Early-Stage Metabolic Osteoarthritis in Rats with Diet-Induced Obesity [Pubmed: 31311115] |
International journal of molecular sciences | Differences in Osteoimmunological Biomarkers Predictive of Psoriatic Arthritis among a Large Italian Cohort of Psoriatic Patients [Pubmed: 31717649] |
Applied Physiology Nutrition and Metabolism | Effectiveness of collagen supplementation on pain scores in healthy individuals with self-reported knee pain; A randomized controlled trial [Pubmed: 31990581] |
heliyon | Oral intake of Streptococcus thermophilus improves knee osteoarthritis degeneration: A randomized, double-blind, placebo-controlled clinical study [] |
EBioMedicine | Repopulation of decellularised articular cartilage by laser-based matrix engraving [33483297] |
Biomolecules | Concerted Actions by PIICP, CTXII, and TNF-¦Á in Patients with Juvenile Idiopathic Arthritis [33924892] |