Determination of morphine in serum and cerebrospinal fluid by gas chromatography and selected ion monitoring after reversed-phase column extraction

Determination of morphine, morphine-3-glucuronide and (tentatively) morphine-6-glucuronide in plasma and urine using ion-pair high-performance liquid chromatography

1982 • 278 citations

THE DISPOSITION OF MORPHINE IN SURGICAL PATIENTS

1976 • 135 citations

Determination of morphine and its major metabolite, morphine-3-glucuronide, in blood by high-performane liquid chromatography with electorchemical detection

1979 • 77 citations

Determination of morphine by liquid chromatography with electrochemical detection

1980 • 74 citations

Determination of morphine in cerebrospinal fluid and plasma by high-performance liquid chromatography with electrochemical detection

1982 • 74 citations

Quantitative determination of morphine in biological samples by gas-liquid chromatography and electron-capture detection

1975 • 73 citations

Pharmacokinetics of Intravenous Morphine in Patients Anesthetized with Enflurane–Nitrous Oxide

1981 • 59 citations

Assay for codeine, morphine and ten potential urinary metabolites by gas chromatography—mass fragmentography

1983 • 44 citations

Quantitative Analysis of Morphine in Urine by Gas Chromatography-Chemical Ionization-Mass Spectrometry, with [N-C2H3]Morphine as an Internal Standard

1974 • 42 citations

Disposition of morphine in rat brain: relationship to biological activity.

1981 • 40 citations

Rapid, Simultaneous Quantification of Morphine, Codeine, and Hydromorphone by GC/MS

1982 • 38 citations

Morphine Radioimmunoassay Specificity Before and After Extraction of Plasma and Cerebrospinal Fluid

1983 • 34 citations

Determination of morphine in biologic fluids by electron capture gas-liquid chromatography

1974 • 33 citations

Simultaneous Quantitation of Morphine and Codeine in Biological Samples by Electron Impact Mass Fragmentography

1982 • 30 citations

Application of the extractive alkylation technique to the pentafluorobenzylation of morphine (a heroin metabolite) and surrogates, with special reference to the quantitative determination of plasma morphine levels using mass fragmentography

1977 • 27 citations

Pharmacokinetics of Morphine and Its Surrogates I: Comparisons of Sensitive Assays of Morphine in Biological Fluids and Application to Morphine Pharmacokinetics in the Dog

1978 • 23 citations

Improved method for morphine extraction from biological samples

1979 • 23 citations

MORPHINE CONCENTRATIONS IN PLASMA AFTER INTRAMUSCULAR ADMINISTRATION

1975 • 22 citations

Mass fragmentography of morphine and 6-monoacetylmorphine in blood with a stable isotope internal standard

1974 • 17 citations

Simultaneous Determination of Morphine and Codeine in Blood by Use of Select Ion Monitoring and Deuterated Internal Standards

1979 • 15 citations

Morphine: Its quantitative determination in nanogram amounts in small samples of whole blood by electron-capture gas chromatography

1979 • 15 citations

Determination of morphine by electron capture gas-liquid chromatography.

1977 • 11 citations