3 months back I hav prediabetes hba1c is 5.8 ,e average sugar is 120.it is done in hpcl method.after 3months i.e,yesterday I tested hba1c is 5.06 and average blood sugar is 96.3 it is done in nepholometry method.now my doubt is hpcl method gives  valuable result or nepholometry method gives exact result?which method is considered for further testing.both are gives accurate result?please advice hba1c test should be done in which method is perfect?reports attached thank you.