diff --git a/src/tests/speedtest.ts b/src/tests/speedtest.ts
index 0ed4372..2899da0 100644
--- a/src/tests/speedtest.ts
+++ b/src/tests/speedtest.ts
@@ -1,10 +1,15 @@
 import axios from "axios"
 import faker from "faker"
+import { config } from '../config'
+import { CertificateRunner } from '../models/CertificateRunner'
+import { DistanceDonation } from '../models/DistanceDonation'
+import { Donor } from '../models/Donor'
 import { Runner } from '../models/Runner'
 import { RunnerCard } from '../models/RunnerCard'
 import { RunnerGroup } from '../models/RunnerGroup'
 
 const baseurl = "http://localhost:4010"
+const key = config.api_key;
 
 axios.interceptors.request.use((config) => {
     config.headers['request-startTime'] = process.hrtime()
@@ -46,6 +51,36 @@ function generateCards(amount: number): RunnerCard[] {
     return cards;
 }
 
+function generateCertificateRunners(amount: number): CertificateRunner[] {
+    let runners: CertificateRunner[] = new Array<CertificateRunner>();
+    let group = new RunnerGroup();
+    let runner = new CertificateRunner();
+    let donor = new Donor();
+    let donation = new DistanceDonation();
+    for (var i = 0; i < amount; i++) {
+        group.name = faker.company.bsBuzz();
+        group.id = Math.floor(Math.random() * (9999999 - 1) + 1);
+
+        donor.firstname = faker.name.firstName();
+        donor.lastname = faker.name.lastName();
+        donor.id = Math.floor(Math.random() * (9999999 - 1) + 1);
+
+        runner.firstname = faker.name.firstName();
+        runner.lastname = faker.name.lastName();
+        runner.id = Math.floor(Math.random() * (9999999 - 1) + 1);
+        runner.distance = Math.floor(Math.random() * (9999999 - 1) + 1);
+
+        donation.id = Math.floor(Math.random() * (9999999 - 1) + 1);
+        donation.donor = donor;
+        donation.runner = runner;
+        donation.amountPerDistance = Math.floor(Math.random() * (10000 - 1) + 1);
+
+        runner.distanceDonations = [donation, donation]
+        runners.push(runner);
+    }
+    return runners;
+}
+
 function idToEan13(id): string {
     const multiply = [1, 3];
     id = id.toString();
@@ -64,15 +99,20 @@ function idToEan13(id): string {
 }
 
 async function postContracts(runners: Runner[]): Promise<Measurement> {
-    const res = await axios.post(`${baseurl}/contracts`, runners);
+    const res = await axios.post(`${baseurl}/contracts?key=${key}`, runners);
     return new Measurement("contract", runners.length, parseInt(res.headers['request-duration']))
 }
 
 async function postCards(cards: RunnerCard[]): Promise<Measurement> {
-    const res = await axios.post(`${baseurl}/cards`, cards);
+    const res = await axios.post(`${baseurl}/cards?key=${key}`, cards);
     return new Measurement("card", cards.length, parseInt(res.headers['request-duration']))
 }
 
+async function postCertificates(runners: CertificateRunner[]): Promise<Measurement> {
+    const res = await axios.post(`${baseurl}/certificates?key=${key}`, runners);
+    return new Measurement("certificate", runners.length, parseInt(res.headers['request-duration']))
+}
+
 async function testContracts(sizes): Promise<Measurement[]> {
     let measurements = new Array<Measurement>();
     console.log("#### Testing contracts ####");
@@ -97,16 +137,30 @@ async function testCards(sizes): Promise<Measurement[]> {
     return measurements;
 }
 
+async function testCertificates(sizes): Promise<Measurement[]> {
+    let measurements = new Array<Measurement>();
+    console.log("#### Testing Certificates ####");
+
+    for (let size of sizes) {
+        const m = await postCertificates(generateCertificateRunners(size));
+        console.log(m.toString());
+        measurements.push(m);
+    }
+    return measurements;
+}
+
 async function main() {
-    const sizes = [0, 1, 10, 50, 100, 200, 500, 1000]
+    const sizes = [1, 10, 50, 100]
     console.log("########### Speedtest ###########");
     console.log(`Document server version (according to the api): ${(await axios.get("http://localhost:4010/version")).data.version}`);
     console.log("####### Running tests #######");
     const contractResults = await testContracts(sizes);
     const cardResults = await testCards(sizes);
+    const certificateResults = await testCertificates(sizes);
     console.log("####### Results #######");
     console.table(contractResults);
     console.table(cardResults);
+    console.table(certificateResults);
 }
 
 main();