Mlab 124 Clinical Chemistry & Urinalysis Mid Term Review Study Guide Rated A+

What is Seminal Fluid- ? {Ans: sperm count for fertility; Count for vasectomy outcome In-vivo or in-vitro fertilization, etc.}What is the Clincial Analysis of Ketones ? {Ans: Normal urine is negative for ketones. If present - ketonia , incomplete fat metabolism}What is a Random Urine Sample? {Ans: Freshly voided specimen for routine testing, should be midstream. May be collected at any time. Commonly used for R & M . Used for qualitative or semi - quantitative tests}What is a Refractometer? {Ans: Specific Gravity determination Measures the refractive index of urine 1-2 drops well mixed urine specimen is put into the instrument The value is read directly off a scale viewed through the ocular Optical method}What would test postitive if urine is left standing for an extended peroid of time ? {Ans: Nitrite would be increased or positive. The pH level will increase as well as bacteria and urobilinogen levels. Formed elements will be broken down}What could cause a false positive result ? {Ans: Eating Red meat 3 days prior to testing Contamination with Menstrual Blood Some drugs , Iron Some foods such as tunips and horseradish}