<prompt> Confirmatory test of blood stain:Spectroscopic testKastle meyer testBenzidine testOhotoluidine test  <response>: SCREENING TEST FOR BLOOD STAINS. I. Color test: 1. Benzidine test Adlers test: BLUE 2. Phenolphthalein test : PINK 3. Ohotoludine test : BLUE II. Luminescent test: 1. Luminol spray 2. UV Light CONFIRMATORY TEST FOR BLOOD STAINS. I. MICROSCOPY: To identify human RBC II. ABSORPTION spectroscopy: Definitive confirmatory test Most reliableUsed for recent old stains. III. Microchemical test: 1. teichmann test hemin crystal test 3. Takayama test hemochromogen crystal 