DNA is a double-stranded molecule forming a double helix. Each strand is made up of nucleotides, which include a phosphate group, a sugar molecule (deoxyribose), and one of four nitrogenous bases: adenine (A), thymine (T), cytosine ©, and guanine (G). RNA is typically single-stranded and shorter than DNA. It consists of nucleotides that include a phosphate group, a sugar molecule (ribose), and one of four nitrogenous bases: adenine (A), uracil (U), cytosine ©, and guanine (G) Human RNA/DNA samples used for diagnostic testing, clinical and laboratory research. Usually packaged in sample collection tubes and in some occasions a reagent may be used to preserve RNA/DNA samples. DNA Samples: Typically collected from blood, saliva, or tissue samples. RNA Samples: Often collected from blood or tissue samples, and require careful handling to prevent degradation.

Classification has been determined in accordance with the following:- General Interpretative Rules (GIR)s GIR 1 has been used to classify this product by the terms of heading 2934 - Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds GIR 5b has been used to identify the type of packaging – in test tubes or slides GIR 6 has been used to classify the goods to subheading level 293499 – Other than elsewhere specified CN code 29349990 - Other than chlorprothixene (inn); thenalidine (inn) and its tartrates and maleates; furazolidone (inn); 7-aminocephalosporanic acid; salts and esters of (6r,7r)-3-acetoxymethyl-7-[(r)-2-formyloxy-2-phenylacetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; 1-[2-(1.3-dioxan-2-yl)ethyl]-2-methylpyridinium bromide Taric code 2934999090 – Other than elsewhere specified HSEN to 2934