diff --git a/README.md b/README.md
index f05a15b3..bad2d96f 100644
--- a/README.md
+++ b/README.md
@@ -86,6 +86,11 @@ npx cdk deploy
     3. Command-Click "Quilt Catalog" to open the package in a new window
 4. Drag in an attachment to the Benchling entry
     1. Click "Update package" to create a new version
+    2. The package will include:
+       - entry.json: Entry metadata
+       - assay-results.json: Associated assay results
+       - input.json: Original webhook payload
+       - README.md: Package documentation
 
 ## Testing
 
diff --git a/lib/constants.ts b/lib/constants.ts
index 2633f8b0..1f4a7df3 100644
--- a/lib/constants.ts
+++ b/lib/constants.ts
@@ -9,6 +9,7 @@ export const FILES = {
     INPUT_JSON: "input.json",
     README_MD: "README.md",
     ENTRY_MD: "entry.md",
+    ASSAY_RESULTS_JSON: "assay-results.json",
 } as const;
 
 export const MIME_TYPES = {
diff --git a/lib/packaging-state-machine.ts b/lib/packaging-state-machine.ts
index 55828ec0..5aaf95ce 100644
--- a/lib/packaging-state-machine.ts
+++ b/lib/packaging-state-machine.ts
@@ -137,10 +137,14 @@ export class PackagingStateMachine extends Construct {
 
     private createDefinition(): stepfunctions.IChainable {
         const fetchEntryTask = this.createFetchEntryTask();
+        const fetchAssayResults = this.createFetchAssayResultsTask();
         const templates = this.writeTemplates();
         const exportWorkflow = this.createExportWorkflow();
 
-        return fetchEntryTask.next(templates).next(exportWorkflow);
+        return fetchEntryTask
+            .next(fetchAssayResults)
+            .next(templates)
+            .next(exportWorkflow);
     }
 
 
@@ -230,6 +234,11 @@ export class PackagingStateMachine extends Construct {
             FILES.ENTRY_JSON,
             "$.entry.entryData",
         );
+        const writeAssayResultsToS3Task = this.createS3WriteTask(
+            this.props.bucket,
+            FILES.ASSAY_RESULTS_JSON,
+            "$.assayResults.assayResults",
+        );
         const writeMetadataTask = this.createS3WriteTask(
             this.props.bucket,
             FILES.INPUT_JSON,
@@ -240,10 +249,32 @@ export class PackagingStateMachine extends Construct {
         return extractDownloadURL
             .next(processExportTask)
             .next(writeEntryToS3Task)
+            .next(writeAssayResultsToS3Task)
             .next(writeMetadataTask)
             .next(sendToSQSTask);
     }
 
+    private createFetchAssayResultsTask(): stepfunctions.CustomState {
+        return new stepfunctions.CustomState(this, "FetchAssayResults", {
+            stateJson: {
+                Type: "Task",
+                Resource: "arn:aws:states:::http:invoke",
+                Parameters: {
+                    "ApiEndpoint.$": 
+                        "States.Format('{}/api/v2/assay-results?entryId={}', $.baseURL, $.entity)",
+                    Method: "GET",
+                    Authentication: {
+                        ConnectionArn: this.props.benchlingConnection.attrArn,
+                    },
+                },
+                ResultSelector: {
+                    "assayResults.$": "$.ResponseBody.assayResults",
+                },
+                ResultPath: "$.assayResults",
+            },
+        });
+    }
+
     private createFetchEntryTask(): stepfunctions.CustomState {
         return new stepfunctions.CustomState(this, "FetchEntry", {
             stateJson: {