Blood Chemistries

Blood chemistries refers to an analysis of a number of chemical substances in the blood, having clinical significance.

While "blood chemistries" may have a specific meaning in a specific context, the words usually mean a series of blood tests taken either to evaluate a specific organ system (eg, liver function tests), or as a general screening test (eg, SMA 12, or Chem 20).

SMA-12

Chem-20

Chem 6 (SMA 6)

Cardiac Enzymes

Liver Function Tests

Kidney Function Tests

Electrolytes

Thyroid Function Tests

Lipid Profile

Coagulation Profile

Amenorrhea Profile

Normal Values*

A/G Ratio >1
Albumin
Men-Women 3.8-5.0 g/dl
Pregnancy 1.9-4.0 g/dl
Alkaline Phosphatase
Men 20-70 U/L

Women

20-150 U/L
Pregnancy 60-200 U/L
Amylase
Men 50-150 U/L

Women

60-180 U/L
Pregnancy 90-350 U/L
AST
Men 8-20 µ/L 

Women

6-18 µ/L 
Children 25-75 µ/L
Bilirubin (total) 0.2-1.0 mg/dl
Bilirubin (Indirect or Unconjugated) 0.2-0.8 mg/dl
Bilirubin (Direct or Conjugated) 0-0.2 mg/dl
Bleeding time
Earlobe (Duke) < 8 minutes

Forearm (Ivy)

<9.5 minutes
BUN
Adults 8-23 mg/dL

Children

5-15 mg/dL
Pregnancy 5-12 mg/dL
Calcium
Men 8.8-10.0 mg/dl
Women 9.0-10.5 mg/dl
Pregnancy 8.1-9.5 mg/dl
Children 9.2-11.0 mg/dl
Chloride
Men 98-106 mmol/L
Women 98-106 mmol/L
Pregnancy 93-100 mmol/L
Cholesterol: Total
Desirable 140-200 mg/dl

Borderline

201-239 mg/dl
High >240 mg/dl
 
Cholesterol: HDL
Men 35-70 mg/dl

Women

35-85 mg/dl
Children 30-65 mg/dl
Cholesterol: LDL
Desirable <130 mg/dl

Borderline

130-159 mg/dl
High >= 160 mg/dl
Cholesterol: VLDL 25-50% of Total Cholesterol
CO2 Content
Men 23-30 mmol/L

Women

21-30 mmol/L
Pregnancy 18-25 mmol/L
CPK (CK)
Men 5-100 IU/L

Women

10-70 IU/L
Pregnancy 5-40 IU/L
Creatinine
Men 0.6-1.2 mg/dl

Women

<1.5 mg/dl
Pregnancy <1.0 mg/dl
Children 0.3-0.7 mg/dl
Creatinine Clearance

Men

70-130 ml/min
Women 91-130 ml/min
Pregnancy 120-160 ml/min
DHEAS
Men 80-640 µg/dl
Women < 350 µg/dl
Women: Moderate Increase 350-700 µg/dl
Women: High Levels > 700 µg/dl
Estradiol
Men 13-42 pg/ml

Women 
(Proliferative Phase)

60-250 pg/ml
Women
(Luteal Phase)
75-450 pg/ml
Women 
(Menopausal)
<10 pg/ml
Women
(Menopausal on estrogen replacement)
50-100 pg/ml
FSH
Men 4-25 mIU/ml

Women

4-30 mIU/ml
Women (Midcycle) 2 x baseline
Women      (Menopausal) 40-250 mIU/ml
FTI
Men 1.3-4.2

Women

1.75-4.95
Glucose - Fasting
Men 70-110 mg/dl
Women 75-115 mg/dl
Pregnancy 60-105 mg/dl
Glucose: 2 Hour Post Prandial <140 mg/dl
Glucose: Pregnancy Screening
Post 50 G Glucose Load <135 mg/dl
Glucose: Gestational Diabetes Criteria

Post 100 G Glucose Load

Fasting 95 mg/dl
1-Hour 180 mg/dl
2-Hour 155 mg/dl
3-Hour 140 mg/dl

If two or more of these values are exceeded, gestational diabetes is present.

Hepatitis B Surface Antigen Negative
LDH
Men 95-200 U/L

Women

200-450 U/L
Pregnancy 200-450 U/L
LH
Men 7-24 mIU/ml

Women
(Follicular Phase)

6-30 mIU/ml
Women
(Midcycle)
>3x baseline
Women 
(Menopausal)
>30 mIU/ml
Magnesium
Men 1.7-2.8 mg/dl
Women 2-3 mg/dl
Pregnancy 1.6-2.1 mg/dl
Therapeutic Range in Pre-eclampsia 4-7 mEq/L
Phosphorus
Men 2.7-4.5 mg/dl
Women 3.0-4.5 mg/dl
Platelets 150,000-350,000/cu. mm
Potassium
Men 3.5-5.0 mEq/L
Women 3.5-5.0 mEq/L
Pregnancy 3.3-4.1 mEq/L
Pregnancy Test Negative
Prolactin
Men <20 ng/ml
Women 2-15 ng/ml
Pregnancy 50-400 ng/ml
Protein (Total)
Men-Women 3.8-5.0 g/dl
Pregnancy 3.0-4.0 g/dl
PT
Men-Women 10-14 seconds (100%)
Therapeutic Range on oral anticoagulants 2-2.5 times normal, but not >30 seconds
PTT
PTT 30-45 seconds 
APTT 16-25 seconds
Therapeutic
Range on oral anticoagulants
2-2.5 times normal
SGGT
Men 8-20 U/L

Women

4-18 U/L
SGOT
Men 8-20 µ/L 

Women

6-18 µ/L 
Children 25-75 µ/L
SGOT
Men 7-17 U/L

Women

0-35 U/L
Pregnancy 0-35 U/L
Sodium
Men 135-138 mEq/L
Women 136-145 mEq/L
Pregnancy 130-140 mEq/L
T3
Men 120-195 ng/dl
Women 70-190 ng/dl
Pregnancy 100-220 ng/dl
T4
Men 5-12.5 µg/dl
Women 5-12 µg/dl
Pregnancy 10-17 µg/dl
T7 (FTI)
Men 1.3-4.2

Women

1.75-4.95
TSH
Men 0.5-6 mIU/L

Women

4-5 mIU/L
Triglycerides
Men 40-160 mg/dl

Women

35-135 mg/dl
Pregnancy <260 mg/dl
Children 30-138 mg/dl
Uric Acid
Men 3.5-7.2 mg/dl
Women 1.5-6.0 mg/dl
Pregnancy 1.2-4.5

*These are general values taken from a variety of sources. The actual normal values may vary from lab to lab and from one type of testing protocol to another.

 

OB-GYN 101: Introductory Obstetrics & Gynecology
© 2003, 2004, 2005 Medical Education Division, Brookside Associates, Ltd.
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