diff --git a/packages/core/src/client.ts b/packages/core/src/client.ts
index d630a1a815..7bc967ff80 100644
--- a/packages/core/src/client.ts
+++ b/packages/core/src/client.ts
@@ -47,7 +47,7 @@ import {
 import { ReadablePromise } from './readablepromise';
 import { ClientStorage } from './storage';
 import { globalSchema, IndexedStructureDefinition, indexSearchParameter, indexStructureDefinition } from './types';
-import { arrayBufferToBase64, createReference, ProfileResource } from './utils';
+import { arrayBufferToBase64, createReference, ProfileResource, sleep } from './utils';
 
 export const MEDPLUM_VERSION = process.env.MEDPLUM_VERSION ?? '';
 
@@ -2452,9 +2452,7 @@ export class MedplumClient extends EventTarget {
       } catch (err: any) {
         this.retryCatch(retry, maxRetries, err);
       }
-      await new Promise((resolve) => {
-        setTimeout(resolve, retryDelay);
-      });
+      await sleep(retryDelay);
     }
     return response as Response;
   }
@@ -2479,9 +2477,7 @@ export class MedplumClient extends EventTarget {
           }
         }
       }
-      await new Promise((resolve) => {
-        setTimeout(resolve, retryDelay);
-      });
+      await sleep(retryDelay);
     }
     return this.parseResponse(resultResponse as Response, 'POST', statusUrl);
   }
diff --git a/packages/core/src/utils.ts b/packages/core/src/utils.ts
index 4431a23e80..c786067c18 100644
--- a/packages/core/src/utils.ts
+++ b/packages/core/src/utils.ts
@@ -796,3 +796,13 @@ export function findResourceByCode(
       : getCodeBySystem(r.code || {}, system) === getCodeBySystem(code, system)
   );
 }
+
+/**
+ * Sleeps for the specified number of milliseconds.
+ * @param ms Time delay in milliseconds
+ * @returns A promise that resolves after the specified number of milliseconds.
+ */
+export const sleep = (ms: number): Promise<void> =>
+  new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
diff --git a/packages/server/src/test.setup.ts b/packages/server/src/test.setup.ts
index 801a658ba3..2389d59632 100644
--- a/packages/server/src/test.setup.ts
+++ b/packages/server/src/test.setup.ts
@@ -1,4 +1,4 @@
-import { createReference, getReferenceString, ProfileResource } from '@medplum/core';
+import { createReference, getReferenceString, ProfileResource, sleep } from '@medplum/core';
 import {
   AccessPolicy,
   Bundle,
@@ -198,8 +198,3 @@ export async function waitForAsyncJob(contentLocation: string, app: Express, acc
   }
   throw new Error('Async Job did not complete');
 }
-
-const sleep = (ms: number): Promise<void> =>
-  new Promise((resolve) => {
-    setTimeout(resolve, ms);
-  });