RSUD Karawang has 167 beds with BOR = 72.65 in 1995. There was no any standardization of pharmaceutical products use at Central Operating Installation of RSUD Karawang Hospital. This research is aimed to analyze actual requirement of used up pharmaceutical products use for elective major operations at Central Operating Installation of RSUD Karawang. Central Operating Installation is an economic and significant revenue and expense source of pharmaceutical products. This research applies a comparative analysis and qualitative approach.The research has been completed at Central Operating Installation of RSUD Karawang from November 11 to December 11, 1996. There were 38 elective major operations held at the hospital. Seventy one percent of the above number was entered into 5 operations, that is : Hemiatomy 7 patients ( 18.42 % ), Strumectomy 6 patients ( 15.78 % ), Appendectomy 5 patients (13.15 % ), Extirpation 5 patients ( 13.15 %) and Prostatectomy 4 patients (10.52 % ). As much as 123 items of used up pharmaceutical products were prepared at Central Operating Installation of RSUD Karawang, but only 73 items ( 59.35 % ) that in use.The number of 73 items used for operation, as follows :1. Hemiatomy:- Hospital report = 43 items ( 58.90 % )- Research result = 45 items ( 61.64 % )2. Strumectomy :- Hospital report = 38 items ( 52.05 % )- Research result = 37 items ( 52,05 % )3. Appendectomy :- Hospital report = 42 items ( 57.53 % )- Research result = 49 items ( 67.12%)4. Extirpation: - Hospital report = 41 items ( 56.16% )- Research result = 44 items ( 60.27%)5. Prostatectomy- Hospital report = 47 items ( 64.38 % )- Research result = 44 items (60.27%)Such an information of used up pharmaceutical products for elective major operations was taken from Central Operating Installation of RSUD Karawang. There was a different information of used up pharmaceutical products use between RSUD Karawang and the researcher. There was also contrary measurement of used up pharmaceutical products use between the hospital and the researcher. Possibly, used up pharmaceutical products use at RSUD Karawang has not been standardized yet. There are 25 items of pharmaceutical products must be prepared by Central Operating Installation of RSUD Karawang for 5 elective major operations. Temporary standardized measurement of used up pharmaceutical products requires a few month Benchmarking.We suggest to increase recording and reporting activities for controlling and providing Hospital's management information.