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Medicine /USMLE Lab Values Serum

USMLE Lab Values Serum

Medicine30 CardsCreated 2 months ago

This flashcard covers normal lab reference ranges for liver enzymes ALT and AST, both typically ranging from 8–20 U/L. These values are crucial for assessing liver function and diagnosing hepatic conditions in the USMLE.

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Alanine amino transferase, ALT

8-20 U/L

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Key Terms

Term
Definition

Alanine amino transferase, ALT

8-20 U/L

Aspartate amino transferase, AST

8-20 U/L

Amylase, serum

25-125 U/L

Total bilirubin, serum (adult)

Direct bilirubin, serum (adult)

  1. 0.1-1 mg/dL, 2-17 microM

0. 0-0.3 mg/dL, 0-5 microM

Calcium, serum

8.4-10.2 mg/dL, 2.1-2.55 mM

Cholesterol, serum

Less than 200 mg/dL, 5.2 mM

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USMLE Lab Values Serum
TermDefinition

Alanine amino transferase, ALT

8-20 U/L

Aspartate amino transferase, AST

8-20 U/L

Amylase, serum

25-125 U/L

Total bilirubin, serum (adult)

Direct bilirubin, serum (adult)

  1. 0.1-1 mg/dL, 2-17 microM

0. 0-0.3 mg/dL, 0-5 microM

Calcium, serum

8.4-10.2 mg/dL, 2.1-2.55 mM

Cholesterol, serum

Less than 200 mg/dL, 5.2 mM

Creatine kinase, serum

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

Creatine, serum

0.6-1.2 mg/dL, 53-106 microM

Cortisol, serum

0800h: 5-23 microg/dL, 138-635 nM
1600h: 3-15 microg/dL, 82-413 nM
2000h: less than half of 0800

5 Electrolytes, serum
Sodium Potassium Chloride Bicarbonate Magnesium

136-145 mEq/L

3.5-5.0 mEq/L

95-105 mEq/L

22-28 mEq/L

1.5-2.0 mEq/L, 0.75-1.0 mM

Ferritin, serum

Male: 15-200 ng/mL
Female: 12-150 ng/mL

Follicle stimulating hormone, serum/plasma

Male: 4-25 U/L

Female:
Pre menopause: 4-30 U/L
Mid cycle peak: 10-90 U/L
Post menopause: 40-250 U/L

Estriol, serum (total, in pregnancy)

24-28 wks: 30-170 ng/mL, 104-590 nM
28-32 wks: 40-220 ng/mL, 140-760 nM
32-36 wks: 60-280 ng/mL, 208-970 nM
36-40 wks: 80-350 ng/mL, 280-1210 nM

Glucose, serum

Fasting: 70-110 mg/dL, 3.8-6.1 mM

2 hr post prandial: less than 120 mg/dL, 6.6 mM

Growth hormone, arginine stimulation

Fasting: less than 5 ng/mL

Provocative stimuli: more than 7 ng/mL

Gases, arterial blood, room air

pH

[H]

pCO2

pO2

7.35-7.45

36-44 nM

33-45 mmHg, 4.4-5.9 kPa

75-105 mmHg, 10.0-14.0 kPa

Iron, serum

50-170 microg/dL, 9-30 microM

Immunoglobulins

IgA

IgE

IgG

IgM

0.76-3.9 g/L

0-380 kIU/L

6.5-15 g/L

0.4-3.45 g/L

Lactate dehydrogenase, serum

45-90 U/L

Luteinizing hormone, serum/plasma

Male: 6-23 U/L

Female:

Follicular phase: 5-30 U/L

Mid cycle: 75-150 U/L

Post menopause: 30-200 U/L

Osmolality, serum

275-295 mOsmol/kg

Parathyroid hormone, serum (N terminal)

230-630 pg/mL, ng/L

Alkaline phosphatase, serum

20-70 U/L

Inorganic phosphorus, serum

3.0-4.5 mg/dL, 1-1.5 mM

Prolactin, serum

Less than 20 ng/mL

Total recumbent protein

Albumin

Globulin

60-78 g/L

35-55 g/L

23-35 g/L

Thyroid-stimulating hormone, TSH, serum/plasma

Thyroxine, T4, serum

Triiodothyronine, T3, serum

0.5-5 mIU/L

5-12 microg/dL, 64-155 nM

115-190 ng/dL, 1.8-2.9 nM

Triglycerides, serum

35-160 mg/dL, 0.4-1.81 mM

Thyroidal iodine I123 uptake

Triiodothyronine resin uptake

08-0.30/24hr

| 0. 25-0.35

Uric acid, serum

Urea nitrogen, serum

3.0-8.2 mg/dL, 0.18-0.48 mM

7-18 mg/dL, 2.5-6.4 mM