J. Liq. Chromatogr. Relat. Technol. 28, 2297-2314 (2005). Review of the use of TLC and HPTLC for the analysis of biological samples of particular interest to biologists, biochemists, hematologists, immunologists, medical diagnosticians, and molecular biologists. Determinations of amino acids, drugs, cabohydrates, lipids, toxins, vitamins, indoles, antibiotics, peptides, pigments, phenols, bile acids, and coumarins in sample matrices such as blood, urine, feces, saliva, cerebrospinal fluids, body tissues, and other biologics are considered. The review discusses the advantage of using modern TLC for biological applications and summarizes important information on stationary and mobile phases and methods used for application of standards and samples, plate development, and zone detection, identification, and quantification.

Encyclopedia of Chromatography Third Edition 1, 514-517 (2009). This review describes the three most important TLC-based drug screening methods for the analysis of the most counterfeited drugs, which are intended to treat tuberculosis infections, macrolides antibiotics, and drugs from the World Health Organization. The methods correspond to the Speedy TLC kit, Fast Chemical Identification System and MiniLab TLC system. The author also describes the advantages of drug-screening TLC methods and its application in the laboratory or in the field.

(Ion-pair TLC). Pharmazie 40, 299-304 (l985). Review on ionpair TLC with numerous proposals for developing conditions.

Encyclopedia of Chromatography Third Edition 1, 874-877 (2009). The author describes the application of TLC to predict the optimum isocratic and gradient eluent composition in traditional and modern flash chromatography. For method development, the hRf should be between 15 and 35 for the component of interest. A relationship between hRF and column volumes for FC is proposed and solvent strenght calculations for different systems are described.

Springer Verlag, Heidelberg 1986, 139 pages. Review on recent progress in isolation techniques for natural products. PLC, centrifugal TLC, column chromatography, prep. HPLC, counter-current chromatography of various plant constituents. Numerous separation condition. and critical observations are reported.

Encyclopedia of Chromatography Third Edition 1, 1640-1647 (2009). This review describes densitometry as the most widely used quantitative TLC method. The principles and theory of densitometry, as well as the instrumental design and data handling are also described. It also mentions in detail the applications and practical aspects of densitometry and finally describes the advantages of TLC/densitometry compared to HPLC.

Special part: TLC of lipids, vitamins, carotenoids, flavonoids, organic acids, pesticides, insecticides, antioxidants, mycotoxins, surfactants.

Encyclopedia of Chromatography Third Edition 1, 2111-2115 (2009). The author describes the sample preparation methods prior qualitative and quantitative analysis by TLC and HPTLC. Classical extraction and clean-up methods include liquid-liquid extraction and soxhlet extraction. Modern methods such as solid phase extraction (SPE), pressurized liquid extraction (PLE), supercritical fluid extraction (SFE) and immunoaffinity (IA) extraction and clean-up are also described.