&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;Overview&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;The Gastrin Immunostain test is used to detect the presence of gastrin, a hormone produced by certain cells in the stomach and pancreas. This test is often employed to diagnose and monitor conditions related to excessive gastrin production, such as gastrinomas (tumors that produce gastrin) and Zollinger-Ellison syndrome, which is characterized by gastrin-secreting tumors in the pancreas or duodenum. By identifying elevated levels of gastrin through immunostaining, healthcare providers can aid in the diagnosis and management of these conditions.&lt;/span&gt;&lt;/p&gt;
&lt;hr /&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;WHAT IS IT USED FOR?&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;ul&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Examination of individuals with absence of stomach acid or pernicious anemia.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Evaluation of individuals with suspected Zollinger-Ellison syndrome.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Identification of gastrinoma.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;METHOD NAME&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Automated Chemiluminescent Immunometric Assay&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;AVAILABILITY&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;TBC&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;REPORTING NAME&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Gastrin, S&lt;/span&gt;&lt;/p&gt;

&lt;h2 id=&quot;SpecimenType-title&quot;&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;SPECIMEN TYPE&lt;/strong&gt;&amp;nbsp;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Serum&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;PATIENT PREPARATION&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;ol&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Fasting for 8 hours is necessary.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Avoid biotin-containing supplements 12 hours prior.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Ideally, halt proton pump inhibitor therapy a week before measuring serum gastrin levels.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Cease gastrointestinal motility-affecting medications like opioids for at least 2 weeks before serum gastrin testing.&lt;/span&gt;&lt;/li&gt;
&lt;/ol&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;SHIPPING INSTRUCTIONS&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;TBC&lt;/span&gt;&lt;/p&gt;
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&lt;div class=&quot;flex flex-1 text-base mx-auto gap-3 juice:gap-4 juice:md:gap-6 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem] group final-completion&quot;&gt;
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&lt;div class=&quot;markdown prose w-full break-words dark:prose-invert light&quot;&gt;
&lt;h2&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;&lt;strong&gt;SPECIMEN REQUIRED&lt;/strong&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;&lt;strong&gt;Container/Tube:&lt;/strong&gt;&lt;span style=&quot;color: #808080;&quot;&gt;&amp;nbsp;Serum gel&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style=&quot;color: #808080;&quot;&gt;&lt;strong&gt;Specimen Volume:&amp;nbsp;&lt;/strong&gt;1 mL&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;&lt;span style=&quot;color: #808080;&quot;&gt;&lt;span style=&quot;color: #33cccc;&quot;&gt;Collection Instructions:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Each vial of multiple specimens should be submitted separately.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Specimens should be labeled with the time of collection.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: #808080;&quot;&gt;Within 2 hours of collection, centrifuge at a refrigerated temperature and promptly transfer serum into plastic vials.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
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Gastrin, Serum