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| 2 | Quality assurance: all systematic actions necessary to provide adequate confidence that laboratory services will satisfy given medical needs for patient care.
Quality control: is a laboratory system for recognizing and correcting the analytical error.
Precision: is a close of test results from one to another when a replication is made when a same sample (control) is used. Precision can be within run and across run.
Accuracy: is a close of test results from its real value (mean) when a replication is made for a test results.
Mean (x): is an average of test results represents a center or a real
value (accuracy) of results.
Standard deviation (SD): is an average of results variation from one to another around its real value (mean). Standard deviation can be 1SD, 2SD and 3SD.
Coefficient variation (CV%): is how close the results (variation) to its mean in percentage.
Sensitivity: is an ability of a method to detect an amount of a substance close to zero value.
Specificity: is an ability of a method to detect only a substance is being tested.
Reliability: is an ability of a method to maintain accuracy, predsion, sensitivity and specificity.
Imprecision: is a calculation of mean, SD and CV% to determine a random error of an analytical method.
Inaccuracy: is a comparison of two methods, one is a test method (new) another is a comparative method (old) to determine a systematic error of an analytical methods.
Trueness: is a close of results average or difference average to a reference value.
Bias: is an average difference of a two means between two methods represents a systematic error.
Error: is an expression used to define how far the data from its real value like mean, SD and CV\%
Systematic error: is an abnormal error of a real value results (accuracy) to be in one side from the mean either positively or negatively in one direction of an analytical measurements.
Random error: is an abnormal error of the results variation (precision) to be very far from its mean either positively or negatively of an analytical measurements.
Total error: is a sum of a desirable and undesirable results of an inaccuracy (bias) represents a systematic error and a standard deviation or CV% represent a random error between two methods compared with CLIA (clinical laboratory improvement amendments) allowable error.
Allowable error: is a desirable of results that can be within an acceptable mean and variation of an analytical method or measurements is compared by CLIA.
Allowable total error: is a sum of a desirable bias (systematic error) and standard deviation or CV\% (random error) of a test is defined by CLIA for an analytical method.
Correlation coefficient (r): is a measurement how strong a relationship between two variables, it is a number from 0 to 1
Control: is a known of sample concentration is where targeted the areas of medical decision is made, it can be low, normal and high to detect the abnormal error.
Lot number: is an small amount made from big amount and given a number.
Calibrator: is a known of sample concentration can be used to build a standard curve.
Calibration: is an analytical method to build a standard curve to get unknown results (patients or control) which is a correlation between y axis (principle of measurement) and x-axis concentration of a calibrator. | 940 |
| 3 | هرمون.pdf | 2 843 |
| 4 |  +1Matn yo'q... | 940 |
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| 7 | HEPATIC SYSTEM BOOK.pdf | 488 |
| 8 | QUALITY SYSTEM BOOK.pdf | 499 |
| 9 | ELECTROLYTES SYSTEM BOOK.pdf | 493 |
| 10 | PROTEIN ELECTRO BOOK.pdf | 494 |
| 11 | DIABETES BOOK.pdf | 494 |
| 12 | BLOOD GAS BOOK.pdf | 494 |
| 13 | HORMONES SYSTEM BOOK.pdf | 487 |
| 14 |  بوست جديد ان شاء الله تكون مفيده #للخريجين_الجدد طبعا هيه سهله جدا بس خاف اكو واحد ميعرفها نذكرها
اليوم راح نتعلم طريقه تحويل الوحدات
من mmol/l الى mg/dl
وطبعا تظهر النتيجه بال mmol/l اذا تم استخدام تركيز الستاندر في معادله الفاكتر في mmol/l
اما اذا استخدمتوا تركيز الستاندر في معادله الفاكتر بوحده mg/dl فسوف تظهر النتيجه بوحده mg/dl
ملاحظه في حالة اردنا العكس يعني تحويل الوحده من mg/dl الى mmol/l
فقط تقومون بعكس العمليه
فمثلا
Blood sugar in mmol/l =6.2 mmol/l
mmol/l÷0.0555=mg/dl
6.2mmol/l ÷0.0555=111.7 mg/dl
لو كانت العمليه العكس يراد تحويل الوحده من mg/dlالى mmol/l
نقوم بعكس العمليه فتصبح
mg/dl÷(1/0.0555)=mmol/l
mg/dl÷18.01=mmol/l
وهكذا..
تحياتي..
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