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USMLE Step 1 > Lab Values > Flashcards

Flashcards in Lab Values Deck (84):
1

Serum: Alanine aminotransferase (ALT)

8-20 U/L

2

Serum: Amylase

25-125 U/L

3

Serum: Aspartate aminotransferase (AST)

8-20 U/L

4

Serum: Bilirubin (adult) - Total//direct

0.1-1.0 mg/dL // 0.0-0.3 mg/dL
2-17 μmol/L // 0-5 μmol/L

5

Serum: Calcium (Ca2+)

8.4-10.2 mg/dL
2.1-2.8 mmol/L

6

Serum: Cholesterol

Rec: less than 200 mg/dL
less than 5.2 mmol/L

7

Serum: Cortisol

0800 h: 5-23 μg/dL // 1600 h: 3-15 μg/dL
138-635 nmol/L // 82-413 nmol/L
[2000 h: less than 50% of 0800]

8

Serum: Creatine kinase

Male: 25-90 U/L
Female: 10-70 U/L

9

Serum: Creatinine

0.6-1.2 mg/dL
53-106 μmol/L

10

Serum electrolytes: Sodium (Na+)

136-145 mEq/L
136-145 mmol/L

11

Serum electrolytes: Potassium (K+)

3.5-5.0 mEq/L
3.5-5.0 mmol/L

12

Serum electrolytes: Chloride (Cl-)

95-105 mEq/L
95-105 mmol/L

13

Serum electrolytes: Bicarbonate (HCO3-)

22-28 mEq/L
22-28 mmol/L

14

Serum electrolytes: Magnesium (Mg2+)

1.5-2.0 mEq/L
0.75-1.0 mmol/L

15

Serum: Ferritin

Male: 15-200 ng/mL.........15-200 μg/L
Female: 12-150 ng/mL.........12-150 μg/L

16

Serum/Plasma: Follicle-stimulating hormone

Male: 4-25 mIU/mL .............. 4-25 U/L
Female:
Premenopause 4-30 mIU/mL......4-30 U/L
Midcycle peak 10-90 mIU/mL .......... 10-90 U/L
Postmen 40-250 mIU/mL...... 40-250 U/L

17

Arterial Blood Gas: pH

7.35-7.45
[H ] 36-44 nmol/L

18

Arterial Blood Gas: PCO2

33-45 mm Hg
4.4-5.9 kPa

19

Arterial Blood Gas: PO2

75-105 mm Hg
10.0-14.0 kPa

20

Serum: Glucose

Fasting: 70-110 mg/dL ............. 3.8-6.1 mmol/L
2-h postprandial: less than 120 mg/dL ..... 6.6 mmol/L

21

Growth hormone - arginine stimulation

Fasting: less than 5 ng/mL ........ 5 μg/L
provocative stimuli: greater than 7 ng/mL ........ 7 μg/L

22

Iron

50-170 μg/dL
9-30 μmol/L

23

Serum: Lactate dehydrogenase

45-90 U/L

24

Serum/plasma: Luteinizing hormone

Male: 6-23 mIU/mL ........................ 6-23 U/L
Female:
Follicular phase 5-30 mIU/mL ...... 5-30 U/L
Midcycle 75-150 mIU/mL ............... 75-150 U/L
Postmen 30-200 mIU/mL ......... 30-200 U/L

25

Serum: Osmolality

275-295 mOsmol/kg H2O

26

Serum: Parathyroid hormone (N-terminal)

230-630 pg/mL
230-630 ng/L

27

Serum: Phosphatase (alkaline) [p-NPP at 30°C]

20-70 U/L

28

Serum: Phosphorus (inorganic)

3.0-4.5 mg/dL
1.0-1.5 mmol/L

29

Serum: Prolactin (hPRL)

Less than 20 ng/mL
Less than 20 μg/L

30

Serum proteins: Total (recumbent)

6.0-7.8 g/dL
60-78 g/L

31

Serum proteins: Albumin

3.5-5.5 g/dL
35-55 g/L

32

Serum proteins: Globulin

2.3-3.5 g/dL
23-35 g/L

33

Serum/Plasma: Thyroid-stimulating hormone (TSH)

0.5-5.0 μU/mL
0.5-5.0 mU/L

34

Thyroidal iodine (123I) uptake

8%-30% of administered dose/24 h
0.08-0.30/24 h

35

Serum: Thyroxine (T4)

5-12 μg/dL
64-155 nmol/L

36

Serum: Triglycerides

35-160 mg/dL
0.4-1.81 mmol/L

37

Serum (RIA): Triiodothyronine (T3)

115-190 ng/dL
1.8-2.9 nmol/L

38

Triiodothyronine (T3) resin uptake

25%-35%
0.25-0.35

39

Serum: Urea nitrogen

7-18 mg/dL
1.2-3.0 mmol/L

40

Serum: Uric acid

3.0-8.2 mg/dL
0.18-0.48 mmol/L

41

BMI

Adult: 19-25 kg/m^2

42

CSF: Cell count

0-5/mm^3
0-5 x 10^6 /L

43

CSF: Chloride

118-132 mEq/L
118-132 mmol/L

44

CSF: Gamma globulin

3%-12% total proteins
0.03-0.12

45

CSF: Glucose

40-70 mg/dL
2.2-3.9 mmol/L

46

CSF: Pressure

70-180 mm H2O

47

CSF: Proteins (total)

Less than 40 mg/dL
Less than 0.40 g/L

48

Bleeding time (template)

2-7mins

49

Erythrocyte count

Male:
4.3-5.9 million/mm^3 .......... 4.3-5.9 x 10^12/L Female:
3.5-5.5 million/mm^3....... 3.5-5.5 x 10^12/L

50

Erythrocyte sedimentation rate (Westergren)

Male: 0-15 mm/h
Female: 0-20 mm/h

51

Hematocrit

Male: 41%-53% ......................... 0.41-0.53
Female: 36%-46% ...................... 0.36-0.46

52

Hemoglobin A1c

Less than 6%
Less than 0.06

53

Blood: Hemoglobin

Male: 13.5-17.5 g/dL ......... 2.09-2.71 mmol/L Female: 12.0-16.0 g/dL ............1.86-2.48 mmol/L

54

Plasma: Hemoglobin

1-4 mg/dL
0.16-0.62 mmol/L

55

Leukocyte count

4500-11,000/mm^3
4.5-11.0 x 10^9/L

56

Segmented neutrophils

54%-62%
0.54-0.62

57

Bands

3%-5%
0.03-0.05

58

Eosinophils

1%-3%
0.01-0.03

59

Basophils

0%-0.75%
0-0.0075

60

Lymphocytes

25%-33%
0.25-0.33

61

Monocytes

3%-7%
0.03-0.07

62

Mean corpuscular hemoglobin

25.4-34.6 pg/cell
0.39-0.54 fmol/cell

63

Mean corpuscular hemoglobin concentration

31%-36% Hb/cell
4.81-5.58 mmol Hb/L

64

Mean corpuscular volume

80-100 μm^3
80-100 fL

65

Partial thromboplastin time (activated)

25-40 seconds

66

Platelet count

150,000-400,000/mm^3
150-400 x 10^9/L

67

Prothrombin time

11-15 seconds

68

Reticulocyte count

0.5%-1.5%
0.005-0.015

69

Thrombin time

Less than 2 seconds deviation from control

70

Plasma volume

Male: 25-43 mL/kg................. 0.025-0.043 L/kg Female: 28-45 mL/kg ............ 0.028-0.045 L/kg

71

Red cell volume

Male: 20-36 mL/kg ............. 0.020-0.036 L/kg Female: 19-31 mL/kg ............. 0.019-0.031 L/kg

72

Sweat: Chloride

0-35 mmol/L

73

Urine: Calcium

100-300 mg/24 h
2.5-7.5 mmol/24 h

74

Urine: Chloride

Varies with intake

75

Urine: Creatinine clearance

Male: 97-137 mL/min
Female: 88-128 mL/min

76

Urine: Estriol (total) [pregnancy]

30wks - 6-18 mg/24 h ......... 21-62 μmol/24 h
35wks - 9-28 mg/24 h ....... 31-97 μmol/24 h
40wks - 13-42 mg/24 h ........ 45-146 μmol/24 h

77

Urine: 17-Hydroxycorticosteroids

Male:
3.0-10.0 mg/24 h .......... 8.2-27.6 μmol/24 h Female:
2.0-8.0 mg/24 h........... 5.5-22.0 μmol/24 h

78

Urine: 17-Ketosteroids (total)

Male:
8-20 mg/24 h ....... 28-70 μmol/24 h
Female:
6-15 mg/24 h.......... 21-52 μmol/24 h

79

Urine: Osmolality

50-1400 mOsmol/kg H2O

80

Urine: Oxalate

8-40 μg/mL
90-445 μmol/L

81

Urine: Potassium

Varies with diet

82

Urine: Total proteins

Less than 150 mg/24 h
Less than

83

Urine: Sodium

Varies with diet

84

Urine: Uric acid

Varies with diet