Now perform laboratory tests to complete the investigation

• R 2.1, R 2.2, R 3.2d Glycated hemoglobin (HbA_1c) 
• R 2.1, R 3.1, R 3.2a-b Fasting Glu
• R 3.2a Pre-prandial blood Glu
• R 3.2c 1-h post-meal Glu
• R 3.2c 2-h post-meal Glu
• R 2.1 Untimed random plasma Glu
• R 2.1, R 2.2, table 2 2h-75g oral glucose tolerance test (OGTT) (1-h and 2-h values)
• R 1.6a Serum creatinine
• R 1.6a Urine albumin/ creatinine ratio
• R 1.6a Estimated glomerular filtration ratio (e-GFR)
• R 1.10, R 6.4  Thyroid stimulating hormone (TSH)

measured either in the 1^st trimester or later during pregnancy.