diff --git a/CInterface/Library/GrowthRate.cpp b/CInterface/Library/GrowthRate.cpp
new file mode 100644
index 0000000..a361108
--- /dev/null
+++ b/CInterface/Library/GrowthRate.cpp
@@ -0,0 +1,19 @@
+#include "../../src/Library/GrowthRates/GrowthRate.hpp"
+#include "../../src/Library/GrowthRates/LookupGrowthRate.hpp"
+#define export extern "C"
+using namespace CreatureLib::Library;
+
+export GrowthRate* CreatureLib_LookupGrowthRate_Construct(uint32_t experiencePerLevel[], size_t count) {
+    std::vector<uint32_t> exp(experiencePerLevel, experiencePerLevel + count);
+    return new LookupGrowthRate(exp);
+};
+
+export void CreatureLib_GrowthRate_Destruct(const GrowthRate* p) { delete p; }
+
+export uint8_t CreatureLib_GrowthRate_CalculateLevel(const GrowthRate* p, uint32_t experience) {
+    return p->CalculateLevel(experience);
+}
+
+export uint32_t CreatureLib_GrowthRate_CalculateExperience(const GrowthRate* p, uint8_t level) {
+    return p->CalculateExperience(level);
+}
\ No newline at end of file
diff --git a/src/Library/GrowthRates/LookupGrowthRate.hpp b/src/Library/GrowthRates/LookupGrowthRate.hpp
index 58e5a75..53b626c 100644
--- a/src/Library/GrowthRates/LookupGrowthRate.hpp
+++ b/src/Library/GrowthRates/LookupGrowthRate.hpp
@@ -6,17 +6,11 @@
 namespace CreatureLib::Library {
     class LookupGrowthRate : public GrowthRate {
     protected:
-        std::vector<uint32_t> _experience = {
-            0,      15,     52,     122,    237,    406,    637,    942,    1326,   1800,   2369,   3041,   3822,
-            4719,   5737,   6881,   8155,   9564,   11111,  12800,  14632,  16610,  18737,  21012,  23437,  26012,
-            28737,  31610,  34632,  37800,  41111,  44564,  48155,  51881,  55737,  59719,  63822,  68041,  72369,
-            76800,  81326,  85942,  90637,  95406,  100237, 105122, 110052, 115015, 120001, 125000, 131324, 137795,
-            144410, 151165, 158056, 165079, 172229, 179503, 186894, 194400, 202013, 209728, 217540, 225443, 233431,
-            241496, 249633, 257834, 267406, 276458, 286328, 296358, 305767, 316074, 326531, 336255, 346965, 357812,
-            367807, 378880, 390077, 400293, 411686, 423190, 433572, 445239, 457001, 467489, 479378, 491346, 501878,
-            513934, 526049, 536557, 548720, 560922, 571333, 583539, 591882, 600000};
+        std::vector<uint32_t> _experience;
 
     public:
+        LookupGrowthRate(const std::vector<uint32_t>& experience) : _experience(experience) {}
+
         uint8_t CalculateLevel(uint32_t experience) const override {
             for (uint8_t i = 0; i < _experience.size(); i++) {
                 if (_experience[i] > experience) {
diff --git a/tests/TestLibrary/TestLibrary.cpp b/tests/TestLibrary/TestLibrary.cpp
index 67b04d4..afa3361 100644
--- a/tests/TestLibrary/TestLibrary.cpp
+++ b/tests/TestLibrary/TestLibrary.cpp
@@ -51,7 +51,17 @@ ItemLibrary* TestLibrary::BuildItemLibrary() {
 
 GrowthRateLibrary* TestLibrary::BuildGrowthRateLibrary() {
     auto l = new GrowthRateLibrary();
-    l->AddGrowthRate("testGrowthRate"_cnc, new LookupGrowthRate());
+    l->AddGrowthRate(
+        "testGrowthRate"_cnc,
+        new LookupGrowthRate(
+            {0,      15,     52,     122,    237,    406,    637,    942,    1326,   1800,   2369,   3041,   3822,
+             4719,   5737,   6881,   8155,   9564,   11111,  12800,  14632,  16610,  18737,  21012,  23437,  26012,
+             28737,  31610,  34632,  37800,  41111,  44564,  48155,  51881,  55737,  59719,  63822,  68041,  72369,
+             76800,  81326,  85942,  90637,  95406,  100237, 105122, 110052, 115015, 120001, 125000, 131324, 137795,
+             144410, 151165, 158056, 165079, 172229, 179503, 186894, 194400, 202013, 209728, 217540, 225443, 233431,
+             241496, 249633, 257834, 267406, 276458, 286328, 296358, 305767, 316074, 326531, 336255, 346965, 357812,
+             367807, 378880, 390077, 400293, 411686, 423190, 433572, 445239, 457001, 467489, 479378, 491346, 501878,
+             513934, 526049, 536557, 548720, 560922, 571333, 583539, 591882, 600000}));
     return l;
 }