diff --git a/integrationTests/Files/deleteFileById.spec.ts b/integrationTests/Files/deleteFileById.spec.ts
new file mode 100644
index 0000000..52a505b
--- /dev/null
+++ b/integrationTests/Files/deleteFileById.spec.ts
@@ -0,0 +1,222 @@
+import { OnspringClient, SaveFileRequest } from '../../src/index';
+import { expect } from 'chai';
+import { baseURL, apiKey } from '../mochaRootHooks';
+import fs from 'fs';
+import path from 'path';
+
+describe('deleteFileById', function () {
+  this.timeout(30000);
+  this.retries(3);
+
+  let attachmentFileId: number;
+  let imageFileId: number;
+
+  before(async function () {
+    attachmentFileId = await addAttachmentFile();
+    imageFileId = await addImageFile();
+  });
+
+  it('should delete a file from an attachment field', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_RECORD === undefined) {
+      expect.fail('TEST_RECORD is not defined');
+    }
+
+    if (process.env.TEST_ATTACHMENT_FIELD === undefined) {
+      expect.fail('TEST_ATTACHMENT_FIELD is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      parseInt(process.env.TEST_RECORD),
+      parseInt(process.env.TEST_ATTACHMENT_FIELD),
+      attachmentFileId
+    );
+
+    expect(response.statusCode).to.equal(204);
+    expect(response.isSuccessful).to.be.true;
+    expect(response.message).to.equal('');
+    expect(response.data).to.equal('');
+  });
+
+  it('should delete a file from an image field', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_RECORD === undefined) {
+      expect.fail('TEST_RECORD is not defined');
+    }
+
+    if (process.env.TEST_IMAGE_FIELD === undefined) {
+      expect.fail('TEST_IMAGE_FIELD is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      parseInt(process.env.TEST_RECORD),
+      parseInt(process.env.TEST_IMAGE_FIELD),
+      imageFileId
+    );
+
+    expect(response.statusCode).to.equal(204);
+    expect(response.isSuccessful).to.be.true;
+    expect(response.message).to.equal('');
+    expect(response.data).to.equal('');
+  });
+
+  it('should return a 400 response when fieldId is not for a file field', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_RECORD === undefined) {
+      expect.fail('TEST_RECORD is not defined');
+    }
+
+    if (process.env.TEST_TEXT_FIELD === undefined) {
+      expect.fail('TEST_TEXT_FIELD is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      parseInt(process.env.TEST_RECORD),
+      parseInt(process.env.TEST_TEXT_FIELD),
+      attachmentFileId
+    );
+
+    expect(response.statusCode).to.equal(400);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.not.be.null.and.not.be.undefined;
+    expect(response.data).to.be.null;
+  });
+
+  it('should return a 401 response when the api key is invalid', async function () {
+    const client = new OnspringClient(baseURL, 'invalid');
+    const response = await client.deleteFileById(1, 1, 1);
+
+    expect(response.statusCode).to.equal(401);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.be.undefined;
+    expect(response.data).to.be.null;
+  });
+
+  it('should return a 403 response when the api key does not have access to the field where the file is held', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_ATTACHMENT_FIELD_NO_ACCESS_FIELD === undefined) {
+      expect.fail('TEST_ATTACHMENT_FIELD_NO_ACCESS_FIELD is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      1,
+      parseInt(process.env.TEST_ATTACHMENT_FIELD_NO_ACCESS_FIELD),
+      1
+    );
+
+    expect(response.statusCode).to.equal(403);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.not.be.null.and.to.not.be.undefined;
+    expect(response.data).to.be.null;
+  });
+
+  it('should return a 403 response when the api key does not have access to the app where the file is held', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_ATTACHMENT_FIELD_NO_ACCESS_APP === undefined) {
+      expect.fail('TEST_ATTACHMENT_FIELD_NO_ACCESS_APP is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      1,
+      parseInt(process.env.TEST_ATTACHMENT_FIELD_NO_ACCESS_APP),
+      1
+    );
+
+    expect(response.statusCode).to.equal(403);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.not.be.null.and.to.not.be.undefined;
+    expect(response.data).to.be.null;
+  });
+
+  it('should return a 404 response when the file field cannot be found', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+    const response = await client.deleteFileById(1, 0, 1);
+
+    expect(response.statusCode).to.equal(404);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.not.be.null.and.to.not.be.undefined;
+    expect(response.data).to.be.null;
+  });
+
+  it('should return a 404 response when the file record cannot be found', async function () {
+    const client = new OnspringClient(baseURL, apiKey);
+
+    if (process.env.TEST_ATTACHMENT_FIELD === undefined) {
+      expect.fail('TEST_ATTACHMENT_FIELD is not defined');
+    }
+
+    const response = await client.deleteFileById(
+      0,
+      parseInt(process.env.TEST_ATTACHMENT_FIELD),
+      1
+    );
+
+    expect(response.statusCode).to.equal(404);
+    expect(response.isSuccessful).to.be.false;
+    expect(response.message).to.not.be.null.and.to.not.be.undefined;
+    expect(response.data).to.be.null;
+  });
+});
+
+async function addAttachmentFile(): Promise<number> {
+  const client = new OnspringClient(baseURL, apiKey);
+
+  if (process.env.TEST_RECORD === undefined) {
+    expect.fail('TEST_RECORD is not defined');
+  }
+
+  if (process.env.TEST_ATTACHMENT_FIELD === undefined) {
+    expect.fail('TEST_ATTACHMENT_FIELD is not defined');
+  }
+
+  const currentDirectory = __dirname;
+  const parentDirectory = path.resolve(currentDirectory, '..');
+  const filePath = path.join(parentDirectory, 'testData/test-attachment.txt');
+  const fileStream = fs.createReadStream(filePath);
+  const request = new SaveFileRequest(
+    parseInt(process.env.TEST_RECORD),
+    parseInt(process.env.TEST_ATTACHMENT_FIELD),
+    'notes',
+    new Date(),
+    'test-attachment.txt',
+    'text/plain',
+    fileStream
+  );
+
+  const response = await client.saveFile(request);
+  return response.data?.id ?? 0;
+}
+
+async function addImageFile(): Promise<number> {
+  const client = new OnspringClient(baseURL, apiKey);
+
+  if (process.env.TEST_RECORD === undefined) {
+    expect.fail('TEST_RECORD is not defined');
+  }
+
+  if (process.env.TEST_IMAGE_FIELD === undefined) {
+    expect.fail('TEST_IMAGE_FIELD is not defined');
+  }
+
+  const currentDirectory = __dirname;
+  const parentDirectory = path.resolve(currentDirectory, '..');
+  const filePath = path.join(parentDirectory, 'testData/test-image.jpeg');
+  const fileStream = fs.createReadStream(filePath);
+  const request = new SaveFileRequest(
+    parseInt(process.env.TEST_RECORD),
+    parseInt(process.env.TEST_IMAGE_FIELD),
+    'notes',
+    new Date(),
+    'test-image.jpeg',
+    'image/jpeg',
+    fileStream
+  );
+
+  const response = await client.saveFile(request);
+  return response.data?.id ?? 0;
+}