Laboratory Values Review (Adult Reference Ranges)

Vocabulary-style flashcards covering normal ranges, interpretations, and definitions of common laboratory values from electrolytes through ethanol.

Sodium (Na+)

Normal range: 136-145 mEq/L.

Potassium (K+)

Normal range: 3.5-5.0 mEq/L.

Chloride (Cl-)

Normal range: 98-106 mEq/L.

Calcium (Ca2+)

Normal range: 9-10.5 mg/dL.

Phosphorus (P)

Normal range: 3-4.5 mg/dL.

Magnesium (Mg2+)

Normal range: 1.3-2.1 mg/dL.

Fasting blood glucose

Normal range: <100 mg/dL.

HbA1c (no diabetes)

Normal range: 4-5.6%.

HbA1c (with diabetes)

Recommended range: 5-7%.

RBCs (erythrocytes)

Normal range: 4.5-5.5 million

WBC (white blood count)

5,000-10,000

PaCO2

35-45 mmHg.

HCO3-

bicarbonate: 21-28 mEq/L.

Total cholesterol

Desired value: <200 mg/dL.

LDL (bad cholesterol)

Desirable: <130 mg/dL.

Triglycerides

<150 mg/dL

HDL (good cholesterol)

>60

CK-MB

Normal range: 30-170 units/L

Troponin T

<0.1 ng/mL

AST (aspartate aminotransferase) LIVER

10-40 u/L

ALT (alanine aminotransferase) LIVER

7-56 u/L

Alkaline phosphatase (ALP) LIVER

30-120 units/L.

Total bilirubin

< 1

Ammonia

0-80 mcg/dL

BUN

8-20 mg/dL

Creatinine

0.6-1.2 mg/dL

Glomerular filtration rate (GFR)

Normal: >90 ml/min;

Urinary output

~30 mL/hr;

Urine pH

Normal range: 4.5-8.0; Usual values: 6.0-7.5.

Ethanol (blood alcohol)

Normal: <50 mg/dL or 0.05%; 0.08% is the legal limit for drivers.

Platelets

150,000-400,000

Hct (females)

37-47%

Hct (males)

42-52%

Hgb Females

12-16 g/dL

Hgb Males

14-18 g/dL

Neutrophils

45-75 %

Eosinophiles

1-4%

Basophils

0-1 %

Iron

Females= 60-160

males = 80-180 mcg/dL

PT (prothrombine time)

10-12 seconds

PTT (partial thromboplastin time)

30-40 seconds

INR (International normalized ratio)

<1

D-dimer

<0.4

Fibrinogen

200-400