Home Nursing Procedures and Skills COMMON LABORATORY VALUES NURSES SHOULD KNOW

COMMON LABORATORY VALUES NURSES SHOULD KNOW

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COMMON LABORATORY VALUES NURSES SHOULD KNOW
Common Laboratory Values
VALUENORMAL RANGEUNIT
COMPLETE BLOOD COUNT
Red Blood Cell (RBC)M: 4.5—5.5
F: 4.0—4.9
x105/ml
White Blood Cell (WBC)4,500—10,000cells/mcL
Platelets100,000—450,000cells/mcL
Hemoglobin (Hgb)M: 13.5—16.5
F: 12.0—15.0
Pregnant: 10—15
g/dL
Hematocrit (Hct)M: 41—50%
F: 36—44%
 
Mean Corpuscular Volume (MCV)80—100fL
DIFFERENTIAL COUNT
Neutrophils54—62% 
Eosinophils1—3% 
Basophils0—0.75% 
Lymphocytes25—33% 
Monocytes3—7% 
SERUM ELECTROLYTES
Sodium (Na+)135—145mEq/L
Potassium (K+)3.5—5.5mEq/L
Chloride (Cl-)95—105mEq/L
Calcium8.5—10.9mEq/L
Calcium, ionized2.24—2.46mEq/L
Magnesium (Mg)1.5—2.5mEq/L
Phosphorus (P)2.5—4.5mEq/L
URINALYSIS
Volume1,000—2,000mL/day
30mL/hour
Specific Gravity1.010—1.020 
pH4.5—8 
Casts1—2per high power field
Glucosenone 
Proteinnone 
Uric AcidF: 3.5—7.2
M: 2.6—6.0
mg/dL
CHEMISTRY VALUES
GlucoseAdults: 70—110mg/dL
Blood Urea Nitrogen (BUN)Adults: 7—18
Child: 5—20
Infant: 5—15
mg/dL
Serum Creatinine0.6—1.35mg/dL
Creatinine Clearance (CrCl)F: 85—132
M: 90—138
mL/min
Albumin3.4—5.0g/dL
Bilirubin<1.0mg/dL
Uric Acid3.5—7.5mg/dL
Creatine phosphokinase (CPK)21—198units/L
COAGULATION STUDIES
Prothrombin Time (PT)11—14seconds
Partial Thromboplastin Time (PTT)25—35seconds
International Normalized Ratio (INR)0.8—1.2 
Activated Partial Thromboplastin Time (aPTT)1.5—2.5 
Fibrinogen203—377mg/dL
Bleeding time1—6mins
LIPOPROTEINS AND TRIGLYCERIDES
Total CholesterolIdeal: below 200
Borderline: 200—240
High: above 240
mg/dL
Low Density Lipoprotein (LDL)<70mg/dL
High Density Lipoprotein (HDL)<60mg/dL
TriglyceridesNormal: below 150
Borderline high: 150—199
High: 200—499
Very high: above 500
mg/dL
SGOT (AST)<35IU/L
SGPT (ALT)<35IU/L
CARDIAC MARKERS
Troponin (CTN-1 or CTN-T)Normal I: 0.03
Critical level I: above 1.5
Critical level T: 0.2
ng/L
C-reactive proteinBelow 0.8mg/dL
CD40 Ligand1.51—5.35mg/L
Creatinine Kinase (CK-MB)0—3mcg/L
ARTERIAL BLOOD GAS
pH7.35—7.45 
Partial Pressure of CO2 (pCO2)35—45mmHg
Partial Pressure of O2 (pO2)80—100mmHg
Bicarbonate (HCO3)22—26mEq/L
Base Excess (BE)-2—+2mEq/L
Oxygen Saturation (SaO2)95—100% 
THYROID FUNCTION STUDIES
Thyroid-Stimulating Hormone (TSH)Adults: 0.2—5.4
Neonate: 3—20
mU/L
Thyroxine (Total T4)Adult: 5.4—11.5
Child: 6.4—13.3
mcg/dL
Free Thyroxine (Total T4 F4)Adult: 0.7—2.0ng/dL
Thyroid-Binding Globulin (TBG)Male: 15—30
Female: 11.5—32.2
Pregnancy
1st Trimester: 19.8—64.7
2nd Trimester: 41.4—63.9
3rd Trimester: 31.0—73.6
mcg/dL
Triiodothyronine (Total T3)75—200ng/dL
Free Triiodothyronine (FT3)260—480pg/dL
Thyroglobulin (Tg) Antibody5—25ng/mL
TUMOR MARKERS
CA 19-9 Tumor Markers<37U/mL
CA 27.29Above 38Uml
CA 15.3Above 22Uml
CA 1250—35Uml
Carcinoembryonic Antigen (CEA)Above 5ng/mL
THERAPEUTIC SERUM DRUG LEVELS
Carbamazepine (Tegretol)4—10mcg/mL
Digoxin (Lanoxin)0.8—2.0ng/mL
Lithium (Eskalith)0.8—1.5mEq/L
Phenobarbital (Solfoton)15—40mcg/mL
Theophylline (Aminophylline)10—20mcg/mL
Valproic Acid (Depakene)50—100mcg/mL