Abstract: Provided is a method for detecting childhood atopic dermatitis using skin surface lipids. The method for detecting childhood atopic dermatitis in a test subject comprises a step of measuring an expression level of TARC gene or an expression product thereof in skin surface lipids collected from the test subject.

Abstract: The present invention provides a method for preventing degradation of skin surface lipid-derived RNA, comprising treating a collection medium containing skin surface lipids with an aqueous solution which comprises at least one selected from the group consisting of guanidine hydrochloride and guanidine thiocyanate and in which water or an alcohol aqueous solution is used as a solvent.

Abstract: Provided is data processing of RNA information in order to perform effective normalization in the case of analyzing RNA information obtained from secretion derived from a subject.

Abstract: Provided are a marker gene for detecting Parkinson's disease, and a method for detecting Parkinson's disease by using the marker gene. The method for detecting Parkinson's disease in a test subject comprises a step of measuring an expression level of at least one gene selected from the group of 4 genes consisting of SNORA16A, SNORA24, SNORA50 and REXO1L2P or an expression product thereof in a biological sample collected from the test subject.

Abstract: Provided is a method for analyzing RNA of a subject with high accuracy. The present invention provides a method for preparing a nucleic acid derived from a skin cell of a subject, the method comprising preserving at 0° C. or lower an RNA-containing skin surface lipid collected from the subject; and a method for preparing a nucleic acid derived from a skin cell of a subject, the method comprising converting RNA has been contained in a skin surface lipid of the subject into cDNA, then amplifying the cDNA by multiplex PCR, and purifying the resulting reaction product.