RT Journal T1 CLinical laboratory medicine. JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1969 FD November 1 VO 124 IS 5 SP 648 OP 648 DO 10.1001/archinte.1969.00300210130045 UL http://dx.doi.org/10.1001/archinte.1969.00300210130045 AB Clinical pathologist Ravel offers this inexpensive, soft-cover response to the "laboratory test explosion." This is a remarkably comprehensive, current, and unusually clinically oriented text. The author does not shy away from clinical descriptions of disorders in his effort to enlighten readers about the appropriateness and meaning of laboratory data. He is concerned about lack of discrimination of clinicians manifested by imprecise and often perfunctory ordering of tests, and the sequelae in wasted effort, time, and money.There is no pretense here at encyclopedic coverage or cook-book methodology. Ravel has created a sound volume that will complement existing books on clinical laboratory medicine. I predict great popularity among students and house officers, and many future editions.