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Lab Values
Normal Ranges
49
Nursing
Professional
04/08/2011
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Term
Sodium
(Na)
 Definition
135-145 mEq/L
Term
Potassium
(K)
 Definition
3.5-5.0 mEq/L
Term
Chloride
(Cl)
 Definition
95-109 mg/dL
Term

CO2 (Bicarb)

(from venous sample)

 Definition
22-31
Term
Glucose
 Definition
70-109
Term
BUN
 Definition
7-20
Term
Creatinine
 Definition
0.4-1.4
Term
GFR
 Definition
Normal kidney function: GFR > 90 w/out proteinuria

Stage 1: GFR > 90 (w/ evidence of kidney dmg)
Stage 2 (Mild): GFR 60-89 (w/ evidence of kidney dmg)
Stage 3 (Moderate): GFR 30-59
Stage 4 (Severe): GFR 15-29
Stage 5: GFR < 15
Term
Total Protein
 Definition
6-8 g/dL
Term
Albumin
 Definition
3.5-5 g/dL
Term
Globulin
 Definition
2.2-3.6
Term
Calcium (Ca)
 Definition
8.5-10.2 mg/dL
Term
Phosphorus
 Definition
2.5-4.5
Term
Magnesium
 Definition
1.6-2.2
Term
Uric Acid
 Definition
2.5-8.0
Term
Total Bilirubin
 Definition
0.1-1.2 mg/dL
Term
Alkaline Phosphatase (ALP)
 Definition
30-110
Term
Alanine transaminase (ALT)
 Definition
16-72
Term
Aspartate transaminase (AST)
 Definition
15-45
Term
Iron (Fe)
 Definition
35-200 mcg/dL
Term
Troponin
 Definition
0.5 or less
Term
Brain Natriuretic Peptide
(BNP)
 Definition
< 100
Term
Creatinine Kinase (CK)
(aka: Creatine Phosphokinase-CPK)
 Definition
0-290 units/L
Term
CK-MB or CPK-MB
 Definition
0-8.0 ng/mL

(An isoenzyme of CK/CPK specific to cardiac cells)
Term
WBCs
 Definition
4,000-10,000/cubic mm
Term
RBCs
 Definition

Male: 4.3-5.6

Female: 3.85-5.1
Term
Hemoglobin
 Definition
12-18
Term
Hematocrit
 Definition
Male: 43-49%
Female: 38-44%
Term
Platelets
 Definition
150-450 k/cubic mm
Term
PTT/aPTT (Partial Thromboplastin Time)
 Definition

25-40 seconds

(Therapeutic = 1.5-2.5 times normal)
Term
PT (prothrombin time)
 Definition

10-13 seconds

(Therapeutic = 1.5-2 times normal)
Term
INR
 Definition
0.9-1.2
(Normal= <2)
(Therapeutic= 2-3)
Term
pH
 Definition
7.35-7.45
Term
pO2
 Definition
80-100
Term
pCO2
 Definition
35-45 mmHg
Term
HCO3
 Definition

22-26

(arterial)
Term
BE (base excess)
 Definition
-2 to +2
Term
Cholesterol (total)
 Definition
<200 mg/dL
Term
Lactic Acid
 Definition
3-23 mg/dL
Term
ESR (erythrocyte sedimentation rate)
 Definition
Men: <15 mm/h
Women: <25 mm/h
Term
Prealbumin
 Definition
12-42 mg/dL
Term
hemoglobin A1C
 Definition
< 6.5%
Term
Ammonia
 Definition
15-45 mcg/dL
Term
Anion Gap
 Definition
8-16 mEq/L
Term
HDL
 Definition
>60 optimal
(normal >45 for men & >55 for women)
Term
LDL
 Definition

<100 optimal

(often see <130 goal)
Term
Osmolality
 Definition
275-295 mOsm/kg
Term
Triglycerides
 Definition
<150 mg/dL
Term
Urine Specific Gravity
 Definition
1.010-1.030
(specific gravity of distilled H2O=1.000)
~lower values in elderly & newborns~
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