Common lab values – [ C ] Normal Laboratory Reference Ranges

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Common Laboratory Values for Lab Tests

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Common Laboratory (LAB) Values - Laboratory values for lab tests

Normal Lab Reference Values

Lab (Specimen)

Conventional Units

SI Units
C-Reactive Protein (CRP), Cardiac  (Plasma) top of page Normal: < 0.8 mg/L
Low risk: <1.00 mg/L
Average risk: 1.00 - 3.00 mg/L
High risk: >3.00 mg/L		  
Calcitonin (serum) top of page Male:  <13.8 pg/ml
Female: < 6.4 pg/ml		 Male:  <13.8 ng/L
Female: < 6.4 ng/L
Calcium (Serum) top of page 8.5 - 10.3 mg/dL

Alt:
0-6 months: 8.9-11.0 mg/dL
7 mon to adults: 8.5-10.6 mg/dL

 2.12 - 2.57 mmol/L
Calcium (Urine) top of page Male: <300 mg/day
Female: <250 mg/day		 Male: <7.5 mmol/day
Female: <6.2 mmol/day
Calcium (Ionized) Serum top of page 4.5 - 5.6 mg/dL Birth up to 1 month:
1.10-1.35 mmol/L
1 month-adult:
1.11 - 1.30 mmol/L
Carbon Dioxide (Serum) top of page 20 - 32 mmol/L 20 - 32 mmol/L
Carboxyhemoglobin (blood)top of page <2% of total Hb (nonsmoker) < 0.02
Catecholamines Fractionated, Urine Free  (Adults) top of page
Components Reference Interval
Dopamine 60 - 610 µg/24 hrs
Epinephrine 0 - 25 µg/24 hrs
Norepinephrine 0 - 140 µg/24 hrs
Catecholamines Fractionated, Plasma  top of page Supine

Components Reference Interval
Epinephrine  

 

Age  
2-10 days
11 days-3 months
4-11 months
12-23 months
24-35 months
3-17 yr
18 yr and older		 36-400 pg/mL
55-200 pg/mL
55-440 pg/mL
36-640 pg/mL
18-440 pg/mL
18-460 pg/mL
10-200 pg/mL
Norepinephrine  

 

Age  
2-10 days
11 days-3 months
4-11 months
12-23 months
24-35 months
3-17 yr
18 yr and older		 170-1180 pg/mL
370-2080 pg/mL
270-1120 pg/mL
68-1810 pg/mL
170-1470 pg/mL
85-1250 pg/mL
80-520 pg/mL
Dopamine 2 days and older: 0-20 pg/mL
Cerebrospinal Fluid Analysis (CSF)    
Chloride (Serum) top of page 95 - 108 mEq/L 95 - 108 mmol/L
Cholesterol
top of page		 ATP III Classification of LDL, Total, and HDL Cholesterol (mg/dL)
LDL Cholesterol – Primary Target of Therapy:
Optimal: <100 mg/dL
Near optimal/above optimal: <100-129 mg/dL
Borderline high: 130-159 mg/dL
High: 160-189 mg/dL
Very high: >189 mg/dL

Total Cholesterol
Desirable: < 200
Borderline high: 200-239
High: >/= 240

HDL Cholesterol
Low: < 40
High: > 60

Coagulation screen:  top of page
Bleeding time:
Prothrombin time:
PTT (activated):
Protein C:
Protein S :		 3-9.5 min
10-13 sec
22-37 sec
0.7-1.4 µ/ml
0.7-1.4 µ/ml 		 180-570 sec
10-13 sec
22-37 sec
700-1400 U/ml
700-1400 U/ml
Complement C3 (Serum) top of page 75 - 161 mg/dL.
Alt: 90-180 mg/dL		 0.75 - 1.61 g/L
Complement C4 (Serum) top of page 16 - 47 mg/dL 0.16 - 0.47 g/L

Complete blood count (CBC) top of page
 Hematocrit

 

Age 0.5-2 yr 3-6 yr 7-12 yr 13+ yr
Male %  30.9-37.0% 31.7-37.7% 32.7-39.3% 40.8-51.9%
Female % 31.2-37.2% 32.0-37.1% 33.0-36.9% 34.3-46.6%
 Hemoglobin

 

Age 61-180 days 0.5-2 yr 3-6 yr 7-12 yr 13+ yr
Male (g/dL) 9.7-12.2 10.3-12.4 10.5-12.7 11.0-13.3 14.6-17.8
Female (g/dL) 9.7-12.0 10.4-12.4 10.7-12.7 10.9-13.3 12.1-15.9
 Red Blood Cell Count

 

Age 61-180 days 0.5-2 yr 3-6 yr 7-12 yr 13+ yr
Male (M/µL) 3.50-4.70 4.10-5.00 4.00-4.90 4.00-4.90 4.69-6.07
Female (M/µL) 3.40-4.60 4.10-4.90 4.00-4.90 4.00-4.90 3.88-5.46
 White Blood Cell Count

 

Age 61-180 days 0.5-2 yr 3-6 yr 7-12 yr 13+ yr
Male (K/µL) 6.9-15.7 6.2-14.5 5.3-11.5 4.5-10.5 3.2-10.6
Female (K/µL) 6.8-16.0 6.4-15.0 5.3-11.5 4.7-10.3 3.2-10.6
 MCV

 

Age 61-180 days 0.5-2 yr 2-6 yr 6-12 yr > 12 yr
Male (fL) 73.6-86.6 70.5-81.2 72.7-83.6 75.9-86.5 77.8-94.0
Female (fL) 74.7-87.6 71.5-81.8 73.8-84.3 76.8-87.6 77.8-94.0
 MCH

 

Age 61-180 days 0.2-2 yr 2-6 yr 6-12 yr > 12 yr
Male (pg) 24.5-29.1 23.2-27.5 24.1-28.4 25.4-29.4 26.5-32.6
Female (pg) 24.7-29.6 23.5-27.6 24.3-28.6 25.4-
29.6		 26.5-32.6
 MCHC

 

Age 61-180 days 0.5-2 yr 2-6 yr 6-12 yr > 12 yr
Male (g/dL) 32.0-35.1 31.9-35.0 31.9-35.1 32.2-35.2 32.7-36.9
Female (g/dL) 32.0-35.1 31.8-34.8 31.9-35.0 31.9-35.0 32.7-36.9
RDW: 
12 yr and older: 10.8-14.1%
 Platelets

 

Age 61-180 days 0.5-2 yr 3-6 yr 7-12 yr 13 + yr
Male (K/µL) 275-566 219-452 204-405 194-364 177-406
Female (K/µL) 288-598 229-465 204-402 183-369 177-406
MPV: 
12 yr and older: 5.9-9.8 fL

Lab (Specimen)

Conventional Units

SI Units
Copper (serum) top of page 70 - 155 µg/dL 11 - 24.4 µmol/L
Cortisol, free (Urine) top of page 20 - 90 µg/day 55- 248 nmol/day
Cortisol (serum) top of page AM: 4.3 - 22.4 µg/dL;
PM: 3.1-16.7 µg/dL		 AM: 110 - 607 nmol/L
PM: 83 - 469 nmol/L
C-peptide (serum) top of page 0.8 - 4.0 ng/mL 0.26 - 1.32 nmol/L
Creatine Kinase (CK) top of page
Components Reference Interval
CK-MM 97-100%
CK-MB 0-3%
CK-BB 0%
Creatine Kinase, Total
Age: Male: Female:
0 to 30 days: 
1 month-19 yrs: 
> 20 yrs old: 		 108-564 U/L  
72-367 U/L
20-200 U/L		 108-564 U/L
72-367 U/L
20-180 U/L
Creatinine (Serum) top of page 0.7 - 1.4 mg/dl  (<1.2) </= 106 µmol/L
Creatinine (Urine) top of page Male: 0.8 - 2.4 g/day
Female: 0.6 - 1.8 g/day		 Male: 7.1 - 21.2 mmol/day
Female: 5.3 - 15.9 mmol/day
Creatinine Clearance (CrCL)
Note: Creatinine clearance reference intervals are based on a body surface area of 1.73 square meters. top of page		  Male:
<12 yr: 50-90 mL/minute,
>12 yr: 97-137 mL/minute 		Female:
< 12 yr: 50-90 mL/minute,
> 12 yr: 88-128 mL/minute
Common lab values – [ C ] Normal Laboratory Reference Ranges