{"id":1165,"date":"2024-04-11T14:22:19","date_gmt":"2024-04-11T11:22:19","guid":{"rendered":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-9-1\/"},"modified":"2024-04-11T14:22:19","modified_gmt":"2024-04-11T11:22:19","slug":"self-test-9-1","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-9-1\/","title":{"rendered":"Self test 9.1"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam7\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-7\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"   watupro-question-id-23\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">1. <\/span>Which definition of LoD is correct:<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"23\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType23\" class=\"answerTypeCnt1\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices23\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-23[]\" id=\"answer-id-75\" class=\"answer   answerof-23 \" value=\"75\"><label for=\"answer-id-75\" id=\"answer-label-75\" class=\" answer\"><span><p>LoD is an estimated value that shows the limit where we can reliably say whether the analyte can be identified in the matrix with the particular analysis method<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-23[]\" id=\"answer-id-76\" class=\"answer   answerof-23 \" value=\"76\"><label for=\"answer-id-76\" id=\"answer-label-76\" class=\" answer\"><span><p>LoD is a characteristic that shows the capability of the used instrument (detector) to give information whether the analyte is present or not in any matrix<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-23[]\" id=\"answer-id-74\" class=\"answer   answerof-23 \" value=\"74\"><label for=\"answer-id-74\" id=\"answer-label-74\" class=\" answer\"><span><p>LoD is the true value below which the analysis method can never state the presence of the analyte<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-23[]\" id=\"answer-id-73\" class=\"answer   answerof-23 \" value=\"73\"><label for=\"answer-id-73\" id=\"answer-label-73\" class=\" answer\"><span><p>LoD is the value that shows if the analyte is present or not in the sample<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-1\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-23\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn23\" class=\"liveResultBtn1 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(23, 1);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"   watupro-question-id-24\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">2. <\/span>Which definition of LoQ is correct:<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"24\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType24\" class=\"answerTypeCnt2\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices24\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-24[]\" id=\"answer-id-78\" class=\"answer   answerof-24 \" value=\"78\"><label for=\"answer-id-78\" id=\"answer-label-78\" class=\" answer\"><span><p>The lowest concentration level of the calibration line<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-24[]\" id=\"answer-id-79\" class=\"answer   answerof-24 \" value=\"79\"><label for=\"answer-id-79\" id=\"answer-label-79\" class=\" answer\"><span><p>The level at which it is possible to quantify the result with accuracy that is fit for purpose<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-24[]\" id=\"answer-id-80\" class=\"answer   answerof-24 \" value=\"80\"><label for=\"answer-id-80\" id=\"answer-label-80\" class=\" answer\"><span><p>A level at least 10 times higher than LoD<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-24[]\" id=\"answer-id-77\" class=\"answer   answerof-24 \" value=\"77\"><label for=\"answer-id-77\" id=\"answer-label-77\" class=\" answer\"><span><p>The lowest concentration under which quantification of the result is impossible<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-2\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-24\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn24\" class=\"liveResultBtn2 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(24, 2);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"   watupro-question-id-25\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">3. <\/span>Which of the following statement is true:<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"25\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType25\" class=\"answerTypeCnt3\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices25\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-25[]\" id=\"answer-id-83\" class=\"answer   answerof-25 \" value=\"83\"><label for=\"answer-id-83\" id=\"answer-label-83\" class=\" answer\"><span><p>Melamine in milk powder is measured. The LoD value of the used analysis method is 1 mg\/kg. The results show the content of 0.2 mg\/kg and therefore this number should be reported as the result.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-25[]\" id=\"answer-id-82\" class=\"answer   answerof-25 \" value=\"82\"><label for=\"answer-id-82\" id=\"answer-label-82\" class=\" answer\"><span><p>The pesticide imazalil was measured from an orange. The analyte was detected however the result is under the allowed MRL value. Therefore the analyte can be said to be present but in an allowed concentration.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-25[]\" id=\"answer-id-81\" class=\"answer   answerof-25 \" value=\"81\"><label for=\"answer-id-81\" id=\"answer-label-81\" class=\" answer\"><span><p>A metabolite of a drug cannot be detected with a screening test from the saliva of a criminal \u2013 the drug has therefore not been used with 100% certainty<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-3\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-25\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn25\" class=\"liveResultBtn3 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(25, 3);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"   watupro-question-id-26\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">4. <\/span>Which effects are not taken into account in instrumental LoD but are taken into account in method LoD:<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"26\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType26\" class=\"answerTypeCnt4\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices26\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-26[]\" id=\"answer-id-84\" class=\"answer   answerof-26 \" value=\"84\"><label for=\"answer-id-84\" id=\"answer-label-84\" class=\" answer\"><span><p>Recovery of the analyte from the sample in sample preparation step<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-26[]\" id=\"answer-id-85\" class=\"answer   answerof-26 \" value=\"85\"><label for=\"answer-id-85\" id=\"answer-label-85\" class=\" answer\"><span><p>Drift of the instrument signal in time\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-26[]\" id=\"answer-id-87\" class=\"answer   answerof-26 \" value=\"87\"><label for=\"answer-id-87\" id=\"answer-label-87\" class=\" answer\"><span><p>Sampling method\u00a0\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-26[]\" id=\"answer-id-88\" class=\"answer   answerof-26 \" value=\"88\"><label for=\"answer-id-88\" id=\"answer-label-88\" class=\" answer\"><span><p>The electrical noise caused by the instrument<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-26[]\" id=\"answer-id-86\" class=\"answer   answerof-26 \" value=\"86\"><label for=\"answer-id-86\" id=\"answer-label-86\" class=\" answer\"><span><p>Matrix effects caused by the sample<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-4\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-26\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn26\" class=\"liveResultBtn4 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(26, 4);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"   watupro-question-id-27\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">5. <\/span>For what purposes can LoD value be used?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"27\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType27\" class=\"answerTypeCnt5\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices27\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-27[]\" id=\"answer-id-91\" class=\"answer   answerof-27 \" value=\"91\"><label for=\"answer-id-91\" id=\"answer-label-91\" class=\" answer\"><span><p>To estimate whether the analyte can be said to be present in the sample at the level of LoD of the analysis method\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-27[]\" id=\"answer-id-90\" class=\"answer   answerof-27 \" value=\"90\"><label for=\"answer-id-90\" id=\"answer-label-90\" class=\" answer\"><span><p>To compare two analytical methods using LoD estimates found from literature. The LoD values have been estimated with different approaches.\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-27[]\" id=\"answer-id-89\" class=\"answer   answerof-27 \" value=\"89\"><label for=\"answer-id-89\" id=\"answer-label-89\" class=\" answer\"><span><p>To interpret whether an analyte is present in the sample or not\u00a0<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-5\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-27\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn27\" class=\"liveResultBtn5 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(27, 5);\"><\/p>\n\t   <div style=\"display:none\" id=\"question-6\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons7\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"><\/div>\t\t  \t\t  \t\t   \n\t\t   \t  \t\t<div><input type=\"button\" name=\"action\" class=\"watupro-submit-button\" onclick=\"WatuPRO.submitResult(event)\" id=\"action-button\" value=\"View Results\">\n\t\t<\/div>\n\t\t<\/div>\n\t\t\n\t<input type=\"hidden\" name=\"quiz_id\" value=\"7\" id=\"watuPROExamID\">\n\t<input type=\"hidden\" name=\"start_time\" id=\"startTime\" value=\"2026-04-17 00:29:45\">\n\t<input type=\"hidden\" name=\"start_timestamp\" id=\"startTimeStamp\" value=\"1776385785\">\n\t<input type=\"hidden\" name=\"question_ids\" value=\"\">\n\t<input type=\"hidden\" name=\"watupro_questions\" value=\"23:75,76,74,73 | 24:78,79,80,77 | 25:83,82,81 | 26:84,85,87,88,86 | 27:91,90,89\">\n\t<input type=\"hidden\" name=\"no_ajax\" value=\"0\">\t\t\t<\/form>\n\t<p>\u00a0<\/p>\n<\/div>\n\n<script type=\"text\/javascript\">\n\/\/jQuery(document).ready(function(){\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \t\nvar question_ids = \"23,24,25,26,27\";\nWatuPROSettings[7] = {};\nWatuPRO.qArr = question_ids.split(',');\nWatuPRO.exam_id = 7;\t    \nWatuPRO.post_id = 1165;\nWatuPRO.store_progress = 0;\nWatuPRO.curCatPage = 1;\nWatuPRO.requiredIDs=\"0\".split(\",\");\nWatuPRO.hAppID = \"0.38933200 1776374985\";\nvar url = \"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/show_exam.php\";\nWatuPRO.examMode = 1;\nWatuPRO.siteURL=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-admin\/admin-ajax.php\";\nWatuPRO.emailIsNotRequired = 0;\nWatuPRO.perDecade = 10;\nWatuPROIntel.init(7);\nWatuPRO.inCategoryPages=1;});    \t \n<\/script>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":60,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-1165","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages\/1165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/users\/60"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/comments?post=1165"}],"version-history":[{"count":0,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages\/1165\/revisions"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/media?parent=1165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}