diff --git a/admin/deleteClinicalIndicesFromRelease.mjs b/admin/deleteClinicalIndicesFromRelease.mjs
index e2d4af1..dac34c8 100644
--- a/admin/deleteClinicalIndicesFromRelease.mjs
+++ b/admin/deleteClinicalIndicesFromRelease.mjs
@@ -7,6 +7,7 @@ import assert from 'node:assert/strict';
 import readline from 'readline';
 import { Client } from '@elastic/elasticsearch';
 import { esHost } from '../dist/src/env.js';
+import { cbKeepClinicalIndicesOnly } from './utils.mjs';
 
 const args = process.argv.slice(2);
 const releaseArgument = args.find(a => a.startsWith('release:')) ?? '';
@@ -67,6 +68,19 @@ assert(
     )} only. Terminating`,
 );
 
+const rAllAliases = await client.cat.aliases({
+    h: 'alias,index',
+    format: 'json',
+});
+
+assert(rAllAliases.statusCode === 200);
+
+const allAliases = rAllAliases.body;
+const clinicalAliases = allAliases.filter(cbKeepClinicalIndicesOnly);
+
+const isAliased = clinicalAliases.some(x => x.index.includes(releaseTag));
+assert(!isAliased, `${releaseTag} is aliased`);
+
 const displayIndicesQuestion = () =>
     new Promise(resolve => {
         userReadline.question(
diff --git a/admin/findClinicalIndicesUsage.mjs b/admin/findClinicalIndicesUsage.mjs
index 9f018a5..a9238e1 100644
--- a/admin/findClinicalIndicesUsage.mjs
+++ b/admin/findClinicalIndicesUsage.mjs
@@ -4,6 +4,7 @@
 import assert from 'node:assert/strict';
 import { Client } from '@elastic/elasticsearch';
 import { esHost } from '../dist/src/env.js';
+import { cbKeepClinicalIndicesOnly } from './utils.mjs';
 
 const client = new Client({ node: esHost });
 
@@ -18,9 +19,6 @@ if (catIndicesResponse.statusCode !== 200) {
     process.exit(1);
 }
 
-const cbKeepClinicalIndicesOnly = x =>
-    ['file', 'biospecimen', 'participant', 'study'].some(stem => x.index.includes(stem));
-
 const clinicalIndices = catIndicesResponse.body.filter(cbKeepClinicalIndicesOnly);
 assert(Array.isArray(clinicalIndices) && clinicalIndices.length > 0, 'No index found. Terminating');
 
@@ -43,8 +41,8 @@ const clinicalIndicesNotAliased = clinicalIndices.filter(x => clinicalAliases.ev
 const unaliasedClinicalIndicesWithCreationDate = makeReleaseToCreationDate(clinicalIndicesNotAliased);
 
 // Make sure that no aliased index contains previously found unaliased releases.
-const unaliasedReleases = unaliasedClinicalIndicesWithCreationDate.map(x => x.release)
-assert(clinicalAliases.every(x => !unaliasedReleases.includes(`re_${x.index.split('re_')[1]}`)))
+const unaliasedReleases = unaliasedClinicalIndicesWithCreationDate.map(x => x.release);
+assert(clinicalAliases.every(x => !unaliasedReleases.includes(`re_${x.index.split('re_')[1]}`)));
 
 console.log(`===== Not Aliased`);
 
diff --git a/admin/utils.mjs b/admin/utils.mjs
new file mode 100644
index 0000000..08820c5
--- /dev/null
+++ b/admin/utils.mjs
@@ -0,0 +1,3 @@
+export const cbKeepClinicalIndicesOnly = x =>
+    ['file', 'biospecimen', 'participant', 'study'].some(stem => x.index.includes(stem));
+