Overview: Quantitative Result TestIntroduction: The Quantitative Result Test provides numerical results for various tests to monitor disease progression or treatment, helping guide medical decisions for specific conditions. Affecting variable populations depending on condition, quantitative results pose diagnostic challenges due to test specificity. Following 2023 Clinical and Laboratory Standards Institute (CLSI) guidelines, it uses variable methods for high accuracy, supporting general pathology screening. This test is essential for diagnosis, treatment planning, and improving outcomes across specialties.
Other Names: Quantitative Measurement Test, Numeric Outcome Assay.
FDA Status: Varies by test, meeting pathology standards for diagnostic reliability.
Historical Milestone: Quantitative testing began in the 20th century with research by Bloor, who standardized measurements. Method advancements in the 1990s improved detection, surpassing earlier qualitative methods.
Purpose: Provides quantitative measurement to monitor disease or treatment, guides therapy adjustments, and evaluates patients with varying symptoms, aiming to optimize care.
Test Parameters: Quantitative measurement
Pretest Condition: Varies by test. Collect whole blood, urine, or swab. Report relevant medical history.
Specimen: Whole Blood (EDTA, 2-5 mL), Urine (sterile container, 5-20 mL), Swab (sterile swab/transport medium, 1-2 swabs); Varies (e.g., serum, urine, blood). Transport in a biohazard container.
Sample Stability at Room Temperature: Varies
Sample Stability at Refrigeration: Varies
Sample Stability at Frozen: Varies
Medical History: Document varies. Include current medications or condition history.
Consent: Written consent required, detailing the test's purpose, disease risks, and sample collection risks.
Procedural Considerations: Uses varies to measure results, requiring labs with appropriate equipment. Results available in 1-5 days. Performed in labs with strict handling.
Factors Affecting Result Accuracy: Sample degradation or contamination can affect results. Medications may alter levels, requiring correlation.
Clinical Significance: Abnormal results suggest disease progression or treatment response, guiding therapy. Early intervention might improve outcomes, while untreated cases lead to worsening. Normal results may require other tests.
Specialist Consultation: Consult relevant specialist for interpretation.
Additional Supporting Tests: Varies by test to confirm diagnosis.
Test Limitations: Specific to test type; correlation with clinical status needed. False results possible with improper collection.
References: CLSI Guidelines, 2023; Clinical Chemistry, Bloor WR, 2022.
