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USMLE Step 1 > Lab Values > Flashcards

Lab Values Flashcards

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USMLE® Step 1 flashcards
1
Q

Serum: Alanine aminotransferase (ALT)

A

8-20 U/L

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2
Q

Serum: Amylase

A

25-125 U/L

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3
Q

Serum: Aspartate aminotransferase (AST)

A

8-20 U/L

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4
Q

Serum: Bilirubin (adult) - Total//direct

A

0.1-1.0 mg/dL // 0.0-0.3 mg/dL

2-17 μmol/L // 0-5 μmol/L

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5
Q

Serum: Calcium (Ca2+)

A
  1. 4-10.2 mg/dL

2. 1-2.8 mmol/L

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6
Q

Serum: Cholesterol

A

Rec: less than 200 mg/dL

less than 5.2 mmol/L

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7
Q

Serum: Cortisol

A

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]

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8
Q

Serum: Creatine kinase

A

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

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9
Q

Serum: Creatinine

A

0.6-1.2 mg/dL

53-106 μmol/L

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10
Q

Serum electrolytes: Sodium (Na+)

A

136-145 mEq/L

136-145 mmol/L

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11
Q

Serum electrolytes: Potassium (K+)

A
  1. 5-5.0 mEq/L

3. 5-5.0 mmol/L

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12
Q

Serum electrolytes: Chloride (Cl-)

A

95-105 mEq/L

95-105 mmol/L

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13
Q

Serum electrolytes: Bicarbonate (HCO3-)

A

22-28 mEq/L

22-28 mmol/L

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14
Q

Serum electrolytes: Magnesium (Mg2+)

A
  1. 5-2.0 mEq/L

0. 75-1.0 mmol/L

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15
Q

Serum: Ferritin

A

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

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16
Q

Serum/Plasma: Follicle-stimulating hormone

A

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

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17
Q

Arterial Blood Gas: pH

A

7.35-7.45

[H ] 36-44 nmol/L

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18
Q

Arterial Blood Gas: PCO2

A

33-45 mm Hg

4.4-5.9 kPa

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19
Q

Arterial Blood Gas: PO2

A

75-105 mm Hg

10.0-14.0 kPa

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20
Q

Serum: Glucose

A

Fasting: 70-110 mg/dL …………. 3.8-6.1 mmol/L

2-h postprandial: less than 120 mg/dL ….. 6.6 mmol/L

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21
Q

Growth hormone - arginine stimulation

A

Fasting: less than 5 ng/mL …….. 5 μg/L

provocative stimuli: greater than 7 ng/mL …….. 7 μg/L

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22
Q

Iron

A

50-170 μg/dL

9-30 μmol/L

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23
Q

Serum: Lactate dehydrogenase

A

45-90 U/L

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24
Q

Serum/plasma: Luteinizing hormone

A

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

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25
Q

Serum: Osmolality

A

275-295 mOsmol/kg H2O

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26
Q

Serum: Parathyroid hormone (N-terminal)

A

230-630 pg/mL

230-630 ng/L

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27
Q

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

A

20-70 U/L

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28
Q

Serum: Phosphorus (inorganic)

A
  1. 0-4.5 mg/dL

1. 0-1.5 mmol/L

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29
Q

Serum: Prolactin (hPRL)

A

Less than 20 ng/mL

Less than 20 μg/L

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30
Q

Serum proteins: Total (recumbent)

A

6.0-7.8 g/dL

60-78 g/L

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31
Q

Serum proteins: Albumin

A

3.5-5.5 g/dL

35-55 g/L

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32
Q

Serum proteins: Globulin

A

2.3-3.5 g/dL

23-35 g/L

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33
Q

Serum/Plasma: Thyroid-stimulating hormone (TSH)

A
  1. 5-5.0 μU/mL

0. 5-5.0 mU/L

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34
Q

Thyroidal iodine (123I) uptake

A

8%-30% of administered dose/24 h

0.08-0.30/24 h

35
Q

Serum: Thyroxine (T4)

A

5-12 μg/dL

64-155 nmol/L

36
Q

Serum: Triglycerides

A

35-160 mg/dL

0.4-1.81 mmol/L

37
Q

Serum (RIA): Triiodothyronine (T3)

A

115-190 ng/dL

1.8-2.9 nmol/L

38
Q

Triiodothyronine (T3) resin uptake

A

25%-35%

0.25-0.35

39
Q

Serum: Urea nitrogen

A

7-18 mg/dL

1.2-3.0 mmol/L

40
Q

Serum: Uric acid

A
  1. 0-8.2 mg/dL

0. 18-0.48 mmol/L

41
Q

BMI

A

Adult: 19-25 kg/m^2

42
Q

CSF: Cell count

A

0-5/mm^3

0-5 x 10^6 /L

43
Q

CSF: Chloride

A

118-132 mEq/L

118-132 mmol/L

44
Q

CSF: Gamma globulin

A

3%-12% total proteins

0.03-0.12

45
Q

CSF: Glucose

A

40-70 mg/dL

2.2-3.9 mmol/L

46
Q

CSF: Pressure

A

70-180 mm H2O

47
Q

CSF: Proteins (total)

A

Less than 40 mg/dL

Less than 0.40 g/L

48
Q

Bleeding time (template)

A

2-7mins

49
Q

Erythrocyte count

A

Male:

  1. 3-5.9 million/mm^3 ………. 4.3-5.9 x 10^12/L Female:
  2. 5-5.5 million/mm^3……. 3.5-5.5 x 10^12/L
50
Q

Erythrocyte sedimentation rate (Westergren)

A

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

51
Q

Hematocrit

A

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

52
Q

Hemoglobin A1c

A

Less than 6%

Less than 0.06

53
Q

Blood: Hemoglobin

A

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
Q

Plasma: Hemoglobin

A

1-4 mg/dL

0.16-0.62 mmol/L

55
Q

Leukocyte count

A

4500-11,000/mm^3

4.5-11.0 x 10^9/L

56
Q

Segmented neutrophils

A

54%-62%

0.54-0.62

57
Q

Bands

A

3%-5%

0.03-0.05

58
Q

Eosinophils

A

1%-3%

0.01-0.03

59
Q

Basophils

A

0%-0.75%

0-0.0075

60
Q

Lymphocytes

A

25%-33%

0.25-0.33

61
Q

Monocytes

A

3%-7%

0.03-0.07

62
Q

Mean corpuscular hemoglobin

A
  1. 4-34.6 pg/cell

0. 39-0.54 fmol/cell

63
Q

Mean corpuscular hemoglobin concentration

A

31%-36% Hb/cell

4.81-5.58 mmol Hb/L

64
Q

Mean corpuscular volume

A

80-100 μm^3

80-100 fL

65
Q

Partial thromboplastin time (activated)

A

25-40 seconds

66
Q

Platelet count

A

150,000-400,000/mm^3

150-400 x 10^9/L

67
Q

Prothrombin time

A

11-15 seconds

68
Q

Reticulocyte count

A
  1. 5%-1.5%

0. 005-0.015

69
Q

Thrombin time

A

Less than 2 seconds deviation from control

70
Q

Plasma volume

A

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

71
Q

Red cell volume

A

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

72
Q

Sweat: Chloride

A

0-35 mmol/L

73
Q

Urine: Calcium

A

100-300 mg/24 h

2.5-7.5 mmol/24 h

74
Q

Urine: Chloride

A

Varies with intake

75
Q

Urine: Creatinine clearance

A

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

76
Q

Urine: Estriol (total) [pregnancy]

A

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
Q

Urine: 17-Hydroxycorticosteroids

A

Male:

  1. 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
Q

Urine: 17-Ketosteroids (total)

A

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

79
Q

Urine: Osmolality

A

50-1400 mOsmol/kg H2O

80
Q

Urine: Oxalate

A

8-40 μg/mL

90-445 μmol/L

81
Q

Urine: Potassium

A

Varies with diet

82
Q

Urine: Total proteins

A

Less than 150 mg/24 h

Less than

83
Q

Urine: Sodium

A

Varies with diet

84
Q

Urine: Uric acid

A

Varies with diet

USMLE Step 1 (26 decks)

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