LAB VALUES

Question 1

*Activated partial thromboplastin time (aPTT)

Answer 1

30-40 sec (30-40 sec)

For those receiving anticoagulant therapy, aPTT is 1.5–2.5 times control value in seconds.

Question 2

Alanine aminotransferase (ALT; formerly known as serum glutamate pyruvate transferase [SGPT])

Answer 2

4-36 U/L (4-36 U/L)

Question 3

Albumin

Answer 3

3.5-5.0 g/dL (35-50 g/L)

Question 4

Ammonia

Answer 4

10–80 mcg/dL (6–47 mcmol/L)

Question 5

Amylase

Answer 5

60–120 Somogyi units/dL (100–300 U/L)

Question 6

Aspartate aminotransferase (AST)
(formerly known as serum glutamic oxaloacetic transferase [SGOT])

Answer 6

0-35 U/L (0-35 U/L)

Question 7

Biliburin

Answer 7

Total: 0.3 - 1.0 mg/dL (5.1 - 17 mcmol/L)
Indirect: 0.2 - 0.8 mg/dL (3.4 - 12 mcmol/L)
Direct: 0.1 - 0.3 mg/dL (1.7 - 5.1 mcmol/L)

Question 8

Blood Culture

Answer 8

No growth

Bacteremia: Bacteria growing in the blood can often be
grown in the culture medium in the microbiology laboratory.
When bacteremia is suspected, antibiotics should be started
immediately after blood cultures are obtained.

Question 9

*Blood gases – arterial and venous values

Answer 9

Arterial pH 7.35-7.45 (7.35-7.45)
Venous pH 7.31-7.41 (7.31-7.41)
PaCO2 35-45 mm Hg (35-45 mm Hg)
Arterial PaO2 80-100 mm Hg (80-100 mm Hg)
Venous PvO2 40-50 mm Hg (40-50 mm Hg)
Bicarbonate 21-28 mEq/L (21-28 mmol/L)

Question 10

*Blood urea nitrogen (BUN)

Answer 10

10 - 20 mg/dL (3.6 - 7.1 mmol/L)

Question 11

Calcium

Answer 11

9-10.5 mg/dL (2.25-2.75 mmol/L)

Question 12

Cerebrospinal Fluid (CSF)

Answer 12

Lumbar Protein: 15-45 mg/dL (0.15-0.45 g/L)
Glucose: 50-75 mg/dL (2.8-4.2 mmol/L)
WBCs (white blood cells): 0-5 cells/mcL (0-5 × 106 /L)
RBCs (red blood cells): negative (negative)
Chloride: 116–122 mmol/L of CSF (116–122 mEq/L of CSF)
Pressure: <20 cm H2O (<20 cm H2O)

Question 13

Chloride

Answer 13

98-106 mEq/L (98-106 mmol/L)

Question 14

Cholesterol

Answer 14

<200 mg/dL (<5 mmol/L) age dependent

Note: see below for low density lipoprotein (LDL), high
density lipoprotein (HDL), and triglyceride levels

Question 15

Creatine Kinase (CK)

Answer 15

Male: 55-170 U/L (55-170 U/L)
Female: 30-135 U/L (30-135 U/L)

Question 16

Creatine kinase isozyme of heart

CK-MB (CK-2)

Answer 16

male: 2 -6 ng/mL (2 - 6 mcg/L)
female: 2 - 5 ng/mL (2 - 5 mcg/L)

Question 17

*Creatinine

Answer 17

male, 0.6-1.2 mg/dL (53-106 mcmol/L)

female 0.5-1.1 mg/dL (44-97 mcmol/L)

Question 18

D-dimer

Answer 18

<50 ng/mL (<3.0 mmol/L)

Question 19

Erythrocyte sedimentation rate (ESR),

Westergren

Answer 19

Male: ≤15 mm/hr (≤15 mm/hr)
Female: ≤20 mm/hr (≤20 mm/hr)

Question 20

Ferritin (serum)

Answer 20

Male: 12-300 ng/mL (12-300 ng/L)
Female: 10-150 ng/mL (10-150 ng/L)

Question 21

Fibrinogen

Answer 21

60 - 100 mg/dL (2.0–5.0 g/L)

Question 22

*Glucose, fasting

Answer 22

70-99 mg/dL (3.9-5.5 mmol/L)

Question 23

Glomerular filtration rate (GFR)

Answer 23

> 60 mL/min/1.73 m2 (age dependent)

Question 24

High density lipoprotein (HDL)

Answer 24

> 60 mg/dL (>1.55 mmol/L)

Question 25

Hematocrit (altitude dependent)

Answer 25

Male: 42-52% (0.42-0.52 volume fraction) Female: 37-47% (0.37-0.47 volume fraction)

Question 26

Hemoglobin (altitude dependent)

Answer 26

Male: 14-18 g/Dl (140-180 mmol/L) Female: 12-16 g/Dl (120-160 mmol/L)

Question 27

Hemoglobin, glycosylated or glycated (HbA1c [A1c])

Answer 27

<6% (adult without diabetes)

Question 28

Homocysteine (dependent on gender | and age)

Answer 28

4.5 -11.9 mcmol/L (4.5 -11.9 mcmol/L)

Question 29

*International normalized ratio (INR)

Answer 29

0.81-1.2 (0.81-1.2)

Question 30

Lactic acid (venous)

Answer 30

5–20 mg/dL (0.6–2.2 mmol/L)

Question 31

Low density lipoprotein (LDL)

Answer 31

<100 mg/dL (<2.59 mmol/L)

Question 32

Lipase

Answer 32

0 – 160 U/L (0 – 160 U/L)

Question 33

Magnesium

Answer 33

1.8–2.6 mEq/L (0.74–1.07 mmol/L)

Question 34

Myoglobin

Answer 34

<90 ng/mL (1.0–5.3 nmol/L)

Question 35

B-type natriuretic peptide

Answer 35

<100 ng/mL (<100 mcg/L)

Question 36

Oxygen Saturation

Answer 36

Arterial: 95%-100% (95%-100%) Venous: 60%-80% (60%-80%)

Question 37

Phosphatase alkaline (ALP)

Answer 37

38-126 U/L (0.65-2.14 μkat/L)

Question 38

Phosphorus, phosphate

Answer 38

3.0-4.5 mg/dL (0.97-1.45 mmol/L)

Question 39

*Platelets

Answer 39

150,000-400,000/mm3 (150-400 × 109 /L)

Question 40

*Potassium

Answer 40

3.5-5.0 mEq/L (3.5-5.0 mmol/L)

Question 41

Protein Total

Answer 41

6.4-8.3 g/dL (64-83 g/dL)

Question 42

Prothrombin time (Protime, PT)

Answer 42

11-12.5 sec (11-12.5 sec) For those receiving anticoagulant therapy, PT is 1.5–2.0 times control value in seconds.

Question 43

Red blood cells

Answer 43

Male: 4.7–6.2 × 1012/L (4.7–6.2 × 1012/L) Female: 4.2–5.4 × 1012/L (4.2–5.4 × 1012/L)

Question 44

*Sodium

Answer 44

135-145 mEq/L (135-145 mmol/L)

Question 45

Specific gravity urine, Random

Answer 45

1.003-1.030 (same as conventional units)

Question 46

Thyroid stimulating hormone (TSH)

Answer 46

2–10 mcIU/mL (2–10 Miu/L)

Question 47

Thyroxine (T4), total

Answer 47

5–12 mcg/dL (64–154 nmol/L)

Question 48

Thyroxine (T4), free

Answer 48

0.8–2.8 ng/dL (10–36 pmol/L)

Question 49

Triglycerides

Answer 49

Female:35-135 mg/dL(0.40-1.52 mmol/L) Male: 40-160 mg/dL (0.45-1.81 mmol/L)

Question 50

Troponin I (cTnI)

Answer 50

<0.35 ng/mL (<0.35 mcg/L)

Question 51

Troponin T (cTnT)

Answer 51

<0.1 ng/mL (<0.1 mcg/L)

Question 52

Uric acid

Answer 52

Male: 4.0-8.5 mg/dL (240-501 mcmol/L) Female: 2.7-7.3 mg/dL (160-430 mcmol/L)

Question 53

Urine

Answer 53

bilirubin, glucose, hemoglobin negative Ph 4.0-8.0 protein 0-trace specific gravity 1.003-1.030

Question 54

Vitamin D (Total 25-hydroxyvitamin D)

Answer 54

30–80 ng/mL (75–200 nmol/L)

Question 55

*White blood cell (WBC) count

Answer 55

5000-10,000/mm3 (5-10 × 10 9/L)

Question 56

Segmented Neutrophils

Answer 56

62-68% (2.5-7.5 × 10 9/L)

Question 57

Band Neutrophils

Answer 57

0-9% (0-1 × 10 9/L)

Question 58

Lymphocytes

Answer 58

1000-4000/mm3 - 20-40% (0.1-0.4 × 109 | /L)

Question 59

Monocytes

Answer 59

100-700/mm3 - 2-8% (0.1-0.7 × 109 | /L)

Question 60

Eosinophils

Answer 60

50-100/mm3 - 1-4% (0.00-0.5 × 109 | /L)

Question 61

Basophils

Answer 61

15-50/mm3 - 0.5-1% (0.02-0.05 × 109 | /L)