Objective: The purpose of this study is to determine if a patient's protein values using the spot urinary microalbuminuria/creatinine ratio correlates with the 24- hour value to confirm the diagnosis of preeclampsia. Study Design: The study population included 80 patients with hypertensive disorders of pregnancy. Patients' urine were collected over 24 hours. The urine volume, and total protein in the 24-hour samples were evaluated. Urine dipstick test and the microalbuminuria /creatinine ratio in a spot urine sample were compared to the 24-hour results. The test of validity and reliability were done using the sensitivity, specificity, false positive and the false negative rate. Also assessed were the positive and negative predictive value and the accuracy.