| Product information | Key steps | References | Technical support | Reviews | 
Product overview
| Product name | Tryptophan ELISA kit  | 
| Description | In vitro diagnostic enzyme immunoassay (ELISA) for the quantitative determination of L-Tryptophan in biological fluids (urine, plasma, serum samples, ...) and cell culture supernatants. | 
| Labels | IVD, CE | 
| Format | 96-well plate | 
| Samples | urine, plasma, serum, cell culture supernatant | 
| Sample volume | 20 µL | 
| Cross species-reactivity | React with all species | 
| Standard range | 2.5 - 250 µg/ml | 
| Sensitivity | < 1.2µg/ml  | 
| Specificity | No significant cross-reactivity was observed with L-Tryptophan analogs such as 5-Hydroxy-L-tryptophan, Tryptamine, 5-Methoxytryptophan, 5-Hydroxytryptamine, N-acetyl-5-hydroxytryptamine.  | 
| Assay time | Sample preparation 2.5 hours and ELISA overnight | 
| Storage | Store at 2-8°C for to 6 months. | 
| Datasheets | Instructions for use , Material safety datasheet | 
Key steps
| Sample collection & storage | Urine: spontaneous or 24-hour urine collected in bottle with 10-15 mL of 6 M HCl, stored at -20°C for long periods (up to 6 months)Plasma/Serum: EDTA-, Heparin- or Citrate- samples stored at 2-8°C for up to 48h or -20°C for longer period (up to 6 months). Do not use haemolytic or lipemic samples.  | 
| Sample preparation | Sample precipitation (15 min) and derivatization (2h15)  | 
| ELISA | Tryptophan antiserum overnight incubation, revelation and read steps (1h). | 
| Detailed protocol | Download instructions for use | 
References
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