diff --git a/fixtures/123-abc-456.mktorest.com-443/associate-lead b/fixtures/123-abc-456.mktorest.com-443/associate-lead
new file mode 100644
index 0000000..635df56
--- /dev/null
+++ b/fixtures/123-abc-456.mktorest.com-443/associate-lead
@@ -0,0 +1,14 @@
+POST /rest/v1/leads/578705/associate.json?cookie=id:356-YFG-389%26token:_mch-mydomain.com-dce599ec86f1c3773ce075014267c852
+accept: application/json, text/plain, */*
+content-type: application/json
+accept-encoding: gzip, compress, deflate, br
+body: {}
+
+HTTP/1.1 200 200
+server: nginx
+date: Wed, 04 Dec 2024 17:42:57 GMT
+content-type: application/json;charset=UTF-8
+content-length: 59
+connection: close
+
+{"requestId":"4cda#19392c49414","result":[],"success":true}
\ No newline at end of file
diff --git a/fixtures/123-abc-456.mktorest.com-443/find-lead-by-email b/fixtures/123-abc-456.mktorest.com-443/find-lead-by-email
new file mode 100644
index 0000000..14fa8ed
--- /dev/null
+++ b/fixtures/123-abc-456.mktorest.com-443/find-lead-by-email
@@ -0,0 +1,13 @@
+GET /rest/v1/leads.json?fields=email,lastName&filterType=email&filterValues=foo%40gmail.com
+accept: application/json, text/plain, */*
+accept-encoding: gzip, compress, deflate, br
+
+200 HTTP/1.1
+server: nginx
+date: Wed, 19 Nov 2014 23:15:13 GMT
+content-type: application/json;charset=UTF-8
+content-length: 121
+connection: keep-alive
+set-cookie: BIGipServerab-restapi_https=587792650.47873.0000; path=/
+
+{"requestId":"179d7#149ca5697d6","result":[{"id":1,"lastName":"test","email":"ak+marketo1@usermind.com"}],"success":true}
\ No newline at end of file
diff --git a/lib/api/lead.js b/lib/api/lead.js
index 7b52439..c08e2ec 100644
--- a/lib/api/lead.js
+++ b/lib/api/lead.js
@@ -32,7 +32,15 @@ Lead.prototype = {
     });
     options = util.formatOptions(options);
 
-    return this._connection.get(path, { query: options });
+    let queryString = undefined;
+    let body = {};
+    if (filterType === 'id') {
+      body = { query: options };
+    } else {
+      queryString = { query: options };
+    }
+
+    return this._connection.get(path, body, queryString);
   },
 
   createOrUpdate: function (input, options) {
diff --git a/lib/connection.js b/lib/connection.js
index a606a89..0b1b5bd 100644
--- a/lib/connection.js
+++ b/lib/connection.js
@@ -52,7 +52,7 @@ Connection.prototype._request = function (method) {
   var requestFn = function requestFn(forceOAuth) {
     return this.getOAuthToken(forceOAuth).then(
       function (token) {
-        var [_a, data] = args;
+        var [_a, data, qs] = args;
 
         var nextPageFn = getNextPageFn(this, method, args);
 
@@ -63,6 +63,9 @@ Connection.prototype._request = function (method) {
         options.url = url;
         options.method = method;
         options.data = data;
+        if (qs?.query) {
+          options.params = qs.query;
+        }
 
         return new Promise((resolve, reject) => {
           return axios(options)
diff --git a/test/leads.test.js b/test/leads.test.js
index 4fff75c..8afb285 100644
--- a/test/leads.test.js
+++ b/test/leads.test.js
@@ -93,6 +93,21 @@ describe('Leads', function () {
           done();
         });
     });
+
+    it('by email - uses multiple filter values and retrieve a subset of fields', function (done) {
+      marketo.lead
+        .find('email', ['foo@gmail.com'], { fields: ['email', 'lastName'] })
+        .then(function (resp) {
+          assert.equal(resp.result.length, 1);
+          assert.equal(resp.result[0].id, 1);
+
+          var lead = resp.result[0];
+          assert.equal(lead.id, 1);
+          assert(_.has(lead, 'email'));
+          assert(_.has(lead, 'lastName'));
+          done();
+        });
+    });
   });
 
   describe('#createOrUpdate', function () {
@@ -110,4 +125,16 @@ describe('Leads', function () {
         .catch(done);
     });
   });
+
+  describe('#associateLead', function () {
+    it('finds a lead by id only', function (done) {
+      marketo.lead
+        .associateLead(578705, 'id:356-YFG-389&token:_mch-mydomain.com-dce599ec86f1c3773ce075014267c852')
+        .then(function (response) {
+          assert.equal(response.result.length, 0);
+          done();
+        })
+        .catch(done);
+    });
+  });
 });