diff --git a/src/Identifiers/UUID.php b/src/Identifiers/UUID.php
--- a/src/Identifiers/UUID.php
+++ b/src/Identifiers/UUID.php
@@ -5,6 +5,8 @@
 
 class UUID {
 
+    const UUID_REGEXP = "/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/";
+
     /**
      * @return string A RFC 4122 compliant v4 UUID
      */
@@ -40,4 +42,8 @@
         return str_replace("-", "", self::UUIDv4());
     }
 
+    public static function isUUID ($string) : bool {
+        return (bool)preg_match(self::UUID_REGEXP, $string);
+    }
+
 }
diff --git a/tests/Identifiers/UUIDTest.php b/tests/Identifiers/UUIDTest.php
--- a/tests/Identifiers/UUIDTest.php
+++ b/tests/Identifiers/UUIDTest.php
@@ -36,4 +36,14 @@
         $this->assertNotEquals(UUID::UUIDv4(), UUID::UUIDv4());
     }
 
+    public function testIsUUID () : void {
+        $this->assertTrue(UUID::isUUID("e14d5045-4959-11e8-a2e6-0007cb03f249"));
+        $this->assertFalse(
+            UUID::isUUID("e14d5045-4959-11e8-a2e6-0007cb03f249c"),
+            "The method shouldn't allow arbitrary size strings."
+        );
+        $this->assertFalse(UUID::isUUID("d825a90a27e7f161a07161c3a37dce8e"));
+
+    }
+
 }