What is the purpose of hplc test? Can we go for the test empty stomach? What is the procedure? Is it a blood test?

Question

High-performance liquid chromatography (HPLC; formerly referred to as high-pressure liquid chromatography), is a technique in analytical chemistry used to separate, identify, and quantify each component in a mixture.
A gradient high-performance liquid chromatographic (HPLC) test procedure is developed and evaluated for its ability to establish the levels of impurities and remaining synthetic precursors in 2-[4-(1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-butyl)-phenyl]-2-meth ylpropionic acid.
Yes its a blood test.

S.K. Tandon · Accepted Answer

High-performance liquid chromatography (HPLC; formerly referred to as high-pressure liquid chromatography), is a technique in analytical chemistry used to separate, identify, and quantify each component in a mixture.
A gradient high-performance liquid chromatographic (HPLC) test procedure is developed and evaluated for its ability to establish the levels of impurities and remaining synthetic precursors in 2-[4-(1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-butyl)-phenyl]-2-meth ylpropionic acid.
Yes its a blood test.