Pregnancy is a special time of a woman's life that affects many different parts of the body. Most laboratory tests remain the same whether you are pregnant or not, while other laboratory tests that may be considered abnormal when not pregnant, can be considered normal during pregnancy. Below are the normal ranges for various lab tests whether you are pregnant or not.

Blood tests during and outside pregnancy

• ALT, SGPT
• Albumin 
• Aldosterone (Serum or Plasma)
• Alpha-Fetoprotein
• Alkaline Phosphatase
• Amylase
• APTT
• Alpha-1 Antitrypsin
• Alpha-Fetoprotein
• Angiotensin Converting Enzyme
• Anion Gap (Plasma, Serum)
• Antithrombin III, functional
• Apolipoprotein A-1
• Apolipoprotein B
• Aspartate Aminotransferase AST, SGOT
• Basophil Count
• Bicarbonate
• Bile Acids
• Bilirubin - Conjugated, Direct
• Bilirubin - Total
• Bilirubin - Unconjugated, Indirect

• Calcium - Ionized (Serum)
• Calcium - Total (Serum)
• Cancer Antigen - 125 (Serum CA)
• Cell-Free DNA Blood Test
• Ceruloplasmin (Serum)
• Chloride (Plasma, Serum)
• Cholesterol - HDL (Plasma, Serum)
• Cholesterol - LDL (Plasma, Serum)
• Cholesterol - Total (Plasma, Serum)
• Cholesterol - VLDL (Plasma, Serum)
• Complement - C3 (Serum)
• Complement - C4 (Serum)
• Copper (Serum)
• Cortisol (Plasma, Serum)
• C-reactive Protein (Serum)
• Creatinine (Plasma, Serum)
• Creatine Kinase - Total (Serum)
• D-dimer (Plasma)
• Dehydroepiandrosterone Sulfate - DHEA-S (Serum)
• Eosinophil Count (Whole Blood)
• Erythrocyte Sedimentation Rate - ESR (Whole Blood)
• Erythropoietin (Serum)
• Estradiol (Serum)
• Factor V (Plasma)
• Factor VII (Plasma)
• Factor VIII (Plasma)
• Folate (Serum)
• Folate - Red Cell (Whole blood)
• Follicle Stimulating Hormone (FSH)
• Gamma Glutamyl Transferase - Gamma Glutamyl Transpeptidase - GGT (Serum)
• Glomerular Filtration Rate (GFR)
• Glucose - Fasting (Plasma)
• Hepatitis A
• Hepatitis B 
• Hepatitis C
• Homocysteine (Plasma)
• Hemoglobin (Whole Blood)
• Hemoglobin A1c - Glycated Hemoglobin (Whole Blood)
• Hemoglobin Electrophoresis
• Hematocrit (Whole Blood)

• Immunoglobulin A (IgA) - Quantitative (Serum)
• Immunoglobulin G (IgG) (Serum)
• Immunoglobulin M (IgM) (Serum)
• Iron (Serum)
• Lactate Dehydrogenase LDH (Serum)
• Lipase (Serum)
• Mean Corpuscular Hemoglobin Concentration (MCHC) (Whole Blood)
• Luteinizing Hormone (LH)
• Mean Corpuscular Hemoglobin (MCH) (Whole Blood)
• Magnesium (Serum) 
• Lymphocyte Count (Whole Blood)
• Neutrophil Count (Whole Blood)
• Platelet Count
• Osmolality (Serum)
• Phosphorus - Inorganic Phosphate (Serum)
• Mean Platelet Volume (MPV) (Whole Blood)
• Monocyte Count (Whole Blood)
• Prealbumin - Transthyretin (Serum)
• Parathyroid Hormone-Related Protein (Serum)
• Parathyroid Hormone (Serum)
• Potassium (Serum)
• Prothrombin Time (Plasma)
• Protein S - Free (Plasma)
• Protein S Functional Activity (Plasma)
• Protein C Functional Activity (Plasma)
• Red Blood Cell Count - RBC (Whole Blood)
• Prolactin (Serum)
• Protein - Total (Serum)
• Red Cell Distribution Width (RCD) (Whole Blood)
• Progesterone (Serum)
• Protein S - Total (Plasma)

• Testosterone - Total (Serum)
• Sex Hormone Binding Globulin (Serum)
• Sodium (Serum)
• Thyroxine-Binding Globulin (TBG) (Serum)
• Selenium (Plasma, Serum)
• Thyroid Stimulating Hormone (TSH)
• Thyroxine - T4 (Serum)
• Thyroxine Free - Thyroxine Direct - FT4 - Free T4 - Unbound T4 (Serum)
• Antigen Tissue Plasminogen Activator (tPA) (Plasma)
• Antigen Tissue Plasminogen Activator Inhibitor-1 (PAI) (Plasma)
• Triglycerides (Serum)
• Transferrin (Serum)
• Total Iron-Binding Capacity - TIBC (Serum)
• Urea Nitrogen - BUN (Serum)
• 24 Hour Sodium (24 Hour Urine Collection) (Excretion)
• Retinol - Vitamin A (Serum)
• 1, 25 Dihydroxy - Vitamin D (Serum)
• 25 - Hydroxy - Vitamin D (Plasma)
• 24 Hour Potassium (24 Hour Urine Collection) 
• Ascorbic Acid - Vitamin C (Serum)
• 24 Hour Urine Collection - 24 Hour Creatinine Collection (Clearance)
• Alpha-Tocopherol - Vitamin E (Serum)
• Uric Acid (Serum)
• 17 - Hydroxyprogesterone (Serum)
• 24 Hour Protein Excretion (Urine)
• 3-Hour Glucose Tolerance Test
• 1-Hour Glucose Tolerance Test (Plasma, Serum)
• White Blood Cell Count (WBC)
• Zinc (Serum)
• Cobalamin - Vitamin B12 (Serum)

Reference: 

Pregnancy and Laboratory Studies
A Reference Table for Clinicians
Abbassi-Ghanavati, Mina MD; Greer, Laura G. MD; Cunningham, F Gary MD
Author Information
Obstetrics & Gynecology: December 2009 - Volume 114 - Issue 6 - p 1326-1331
doi: 10.1097/AOG.0b013e3181c2bde8