Lab Reference Ranges

Question 1

Vitamin B12, serum

Answer 1

200 to 800 pg/mL; 147.5 to 590 pmol/L (SI)

568-1252 pg/ml

Question 2

Folate, serum

Answer 2

1.8 to 9 ng/mL; 4.1 to 20.4 nmol/L (SI)

2-20 ng/ml (3-13?)

Question 3

Mean Corpuscular Volume (MCV)

Answer 3

MCV 80-96

Question 4

Hct

Answer 4

Normal Hct
Males: 42-48% (41-50%)
Females: 36-44% (36-48%)

Question 5

Hgb

Answer 5

Males: 14-16 g/dL (14-17.5)
Females: 12-14 g/dL (12-15)

Question 6

RBC

Answer 6

Males: 4.7-6.1 million/mcl
Females: 4.2-5.4 million/mc

Question 7

Reticulocytes

Answer 7

0.5-1.5% (0.5-2%)

Question 8

Platelets

Answer 8

150,000-450,000/mL

Question 9

WBC

Answer 9

4000-11000/mL

Question 10

Monocytes

Answer 10

100-500/mm3

3-7% of WBCs

Question 11

Lymphocytes

Answer 11

1500-4000/mm3

30-45% of WBCs

Question 12

Absolute Neutrophil Count

Answer 12

2000 to 8250/mm3
Segs 50-70% of WBCs
Bands 0-5% of WBCs

Question 13

Basophils

Answer 13

15-50/mm3

0-1% of WBCs

Question 14

Eosinophils

Answer 14

0-500/mm3

0-3% of WBCs

Question 15

Mean Corpuscular Hgb Concentration (MCHC)

Answer 15

33 to 36 g/dL; 330 to 370 g/L (SI)

Question 16

Mean Corpuscular Hgb (MCH)

Answer 16

28 to 32 pg/cell; 28 to 32 pg/cell (SI)

Question 17

Aminotransferase alanine (ALT, SGPT), serum

Answer 17

10 to 40 units/L

Adults 5-35 IU/L
Infant 10-70 IU/L
Slightly higher in elderly

Question 18

Aminotransferase aspartate (AST, SGOT), serum

Answer 18

10 to 40 units/L

Male: 10 to 40 units/L
Female: 9 to 32 units/L

Question 19

Alkaline phosphatase (ALP), serum

Answer 19

30 to 120 units/L

Male: 45 to 115 units/L
Female: 30 to 100 units/L

Adults 30-85 ImU/ml 
<2yo 85-235 ImU/ml 
2-8yo 54-210 ImU/ml
9-15 60-300 ImU/ml
6-12yo 30-200 ImU/ml

Question 20

AST:ALT

Answer 20

0.8 to <1

Question 21

Gamma-glutamyl transpeptidase (GGT), serum

Answer 21

Female: 8 to 40 units/L; 8 to 40 units/L (SI); 5-36
Male: 9 to 50 units/L; 9 to 50 units/L (SI); 8-61

Question 22

BIlirubin, total, serum

Answer 22

0.0 to 1.0 mg/dL (0 to 17 micromol/L)

Question 23

Bilirubin, direct, serum

Answer 23

0.0 to 0.4 mg/dL (0 to 7 micromol/L)

Question 24

Albumin, serum

Answer 24

3.5 to 5.5 g/dL (35 to 55 g/L)

Question 25

Leucine aminopeptidase (LAP), serum

Answer 25

Males 80-200 U/ml
Females 75-185 U/ml
Urine 2-18 U in 24hrs

Question 26

Cholesterol <19yo

Answer 26

TC <170
Non-HDL <120
LDL <100
HDL >45

Question 27

Cholesterol, >19yo, males

Answer 27

TC 125-200
Non-HDL <130
LDL <100
HDL >40

Question 28

Cholesterol, >19yo, females

Answer 28

TC 125-200
Non-HDL <130
LDL <100
HDL >50

Question 29

RBC Distribution Width (RDW)

Answer 29

11-15%

Question 30

Ferritin, serum

Answer 30

22-322 ng/ml

Female: 24 to 307 ng/mL; 54 to 690 pmol/L (SI)
Male: 24 to 336 ng/mL; 54 to 755 pmol/L (SI)

Question 31

Iron (Fe), serum

Answer 31

50 to 150 microg/dL; 9 to 27 micromol/L (SI)

Question 32

Total Iron Binding Capacity (TIBC), serum

Answer 32

250 to 310 microg/dL; 44.8 to 55.5 micromol/L (SI)

Question 33

Transferrin, serum

Answer 33

200 to 400 mg/dL; 26 to 50 micromol/L (SI)

Question 34

Transferin saturation

Answer 34

20 to 50 percent

Question 35

Triglycerides, serum (fasting)

Answer 35

Optimal: <100 mg/dL; <1.1 mmol/L (SI)
Normal: <150 mg/dL; <1.7 mmol/L (SI)
Borderline-high: 150 to 199 mg/dL; 1.7 to 2.2 mmol/L (SI)
High: 200 to 499 mg/dL; 2.3 to 5.6 mmol/L (SI)
Very high: >499 mg/dL; >5.6 mmol/L (SI)

Question 36

A1C (hemoglobin A1C, glycohemoglobin)

Answer 36

4 to 5.6 percent; 20.2 to 37.7 mmol/mol (SI)

Question 37

Thyroid stimulating hormone (TSH), serum

Answer 37

0.5 to 4 microunits/mL; 0.5 to 4 milliunits/L (SI)

Question 38

Thyroxine (T4), serum

Answer 38

Total: 5 to 12 microg/dL; 64.4 to 154.4 nmol/L (SI)
Free: 0.8 to 1.8 ng/dL; 10.3 to 23.2 pmol/L (SI)

Question 39

Triiodothyronine (T3), serum

Answer 39

Total: 80 to 180 ng/dL; 1.2 to 2.8 nmol/L (SI)
Reverse: 20 to 40 ng/dL
Free: 2.3 to 4.2 pg/mL; 3.5 to 6.5 pmol/L (SI)