การหาค่าความแม่นยำของการตรวจพบเลือดในปัสสาวะด้วยแถบทดสอบทางเคมีกับการตรวจด้วยกล้องจุลทรรศน์ในประชากร หมู่ 11 บ้านทุ่งส่อหงษา ตำบลท่ากระดาน อำเภอสนามชัยเขต จังหวัดฉะเชิงเทรา

Abstract

Urinalysis is a routine diagnostic test especially in diseases of the kidney and urinary system.Currently dipstick and microscopic urine examinations are standard tests for urinalysis. Objective: To determine the  correlation between urine dipstick results and microscopic urine examination for the detection of hematuria in  Thai rural populations. Study design: Cross-sectional descriptive study. Settings: Moo 11 Ban Toong Sor Hongsa  Tha Kradan Sub-district Sanam Chai Ket District Chacheongsao Province. Materials and methods:Midstream urine of 508  participants were screened for hematuria using urine dipstick   Combur10 Test M Roche Diagnostics)  and microscopic examination. Results: The prevalence of hematuria  proteinuria  pyuria glucosuria and  birilubinuria was 4.14%, 3.54%, 3.15%, 2.17% and 1.38% respectively. Moreover 2.95% and 1.18% were positive for  nitrite and urobilinogen respectively. Using microscopic examination as a gold standard the sensitivity specificity accuracy positive and negative predictive values of the urine dipstick were  100%, 95.26%, 97.63%, 48.89%  and  100%, respectively. Additional microscopic findings of urinary crystals were found: calcium oxalate (8.66%) a morphous      ( 8.07%) u rate c rystals ( 5.12%) and triple phosphate ( 0.20%).    Conclusion: Urinary screening for  hematuria  using a dipstick showed good correlation with microscopic examination. Therefore a urine dipstick may  be equivalent  to diagnose hematuria and urinary infection in community-based testing.