RSID-Urine
Definition
Rapid Stain Identification of Urine. An immunochromatographic lateral-flow assay that detects Tamm-Horsfall protein in biological extracts, providing a highly specific confirmatory test for human urine.
- Full name
- Rapid Stain Identification of Urine
- Manufacturer
- Independent Forensics
- Target
- Tamm-Horsfall protein
- Format
- Immunochromatographic lateral-flow assay
Common questions
Why is a confirmatory urine test needed when urine has a distinctive odour?+
Odour and colour are only presumptive indicators and can arise from other sources or fade with age, while Tamm-Horsfall protein is produced specifically in the kidney's loop of Henle, making its detection a more reliable confirmatory marker for forensic reporting.
What situations call for confirming urine at a scene?+
Urine staining can be relevant in sexual assault, elder or child abuse, and arson investigations where urine is used to identify a location a person occupied or to corroborate other findings, so a specific confirmatory test avoids misattributing a stain to another fluid.
Related terms
- Creatinine
- A breakdown product of creatine phosphate in muscle. It is filtered by the kidneys and excreted in urine at relatively constant rates,...
- Dermcidin
- An antimicrobial peptide secreted constitutively by eccrine sweat glands. The primary candidate marker for immunological identification of sweat in forensic samples, though...
- Eccrine Glands
- The primary sweat glands distributed across most body surfaces, producing a watery secretion mainly of water, sodium chloride, and trace amounts of...
- Tamm-Horsfall Protein (Uromodulin)
- The most abundant protein in normal human urine, secreted exclusively by cells of the thick ascending limb of Henle's loop in the...
- Urea
- A product of protein catabolism excreted primarily in urine, present at 200 to 400 mmol per litre. Also present at lower concentrations...