Search Units
Acetaminophen
Specimen: Serum, Plasma
Conversion Factor: 6.614
US Range:10-30 µg/mL
SI Range: 66-200 µmol/L
Acetoacetate
Specimen: Serum, Plasma
Conversion Factor: 97.95
US Range:<1 mg/dL
SI Range: <100 µmol/L
Acetone
Specimen: Serum, Plasma
Conversion Factor: 0.172
US Range:<1.0 mg/dL
SI Range: <0.17 mmol/L
Acid phosphatase
Specimen: Serum
Conversion Factor: 16.667
US Range:<5.5 U/L
SI Range: <90 nkat/L
Activated partial thromboplastin time (APTT)
Specimen: Whole blood
Conversion Factor: 1
US Range:25-40 s
SI Range: 25-40 s
Adenosine deaminase
Specimen: Serum
Conversion Factor: 16.667
US Range:11.5-25.0 U/L
SI Range: 190-420 nkat/L
Adrenocorticotropic hormone (ACTH)
Specimen: Plasma
Conversion Factor: 0.22
US Range:<120 pg/mL
SI Range: <26 pmol/L
Alanine
Specimen: Plasma
Conversion Factor: 112.2
US Range:1.87-5.89 mg/dL
SI Range: 210-661 µmol/L
Alanine aminotransferase (ALT)
Specimen: Serum
Conversion Factor: 0.0167
US Range:10-40 U/L
SI Range: 0.17-0.68 µkat/L
Albumin
Specimen: Serum
Conversion Factor: 10
US Range:3.5-5.0 g/dL
SI Range: 35-50 g/L
Alcohol dehydrogenase
Specimen: Serum
Conversion Factor: 16.667
US Range:<2.8 U/L
SI Range: <47 nkat/L
Aldolase
Specimen: Serum
Conversion Factor: 0.0167
US Range:1.0-7.5 U/L
SI Range: 0.02-0.13 µkat/L
Aldosterone
Specimen: Serum, Plasma
Conversion Factor: 27.74
US Range:2-9 ng/dL
SI Range: 55-250 pmol/L
Alkaline phosphatase
Specimen: Serum
Conversion Factor: 0.0167
US Range:30-120 U/L
SI Range: 0.5-2.0 µkat/L
Alprazolam
Specimen: Serum, Plasma
Conversion Factor: 3.24
US Range:10-50 ng/mL
SI Range: 32-162 nmol/L
Amikacin
Specimen: Serum, Plasma
Conversion Factor: 1.708
US Range:20-30 µg/mL
SI Range: 34-52 µmol/L
α-Aminobutyric acid
Specimen: Plasma
Conversion Factor: 96.97
US Range:0.08-0.36 mg/dL
SI Range: 8-35 µmol/L
δ-Aminolevulinic acid
Specimen: Serum
Conversion Factor: 0.0763
US Range:15-23 µg/dL
SI Range: 1.1-8.0 µmol/L
Amiodarone
Specimen: Serum, Plasma
Conversion Factor: 1.55
US Range:0.5-2.5 µg/mL
SI Range: 0.8-3.9 µmol/L
Amitriptyline
Specimen: Plasma
Conversion Factor: 3.605
US Range:120-250 ng/mL
SI Range: 433-903 nmol/L
Ammonia (as nitrogen)
Specimen: Serum, Plasma
Conversion Factor: 0.714
US Range:15-45 µg/dL
SI Range: 11-32 µmol/L
Amobarbital
Specimen: Serum
Conversion Factor: 4.42
US Range:1-5 µg/mL
SI Range: 4-22 µmol/L
Amphetamine
Specimen: Serum, Plasma
Conversion Factor: 7.4
US Range:20-30 ng/mL
SI Range: 148-222 nmol/L
Amylase
Specimen: Serum
Conversion Factor: 0.0167
US Range:27-131 U/L
SI Range: 0.46-2.23 µkat/L
Androstenedione
Specimen: Serum
Conversion Factor: 0.0349
US Range:75-205 ng/dL
SI Range: 2.6-7.2 nmol/L
Angiotensin I
Specimen: Plasma
Conversion Factor: 0.772
US Range:<25 pg/mL
SI Range: <15 pmol/L
Angiotensin II
Specimen: Plasma
Conversion Factor: 0.957
US Range:10-60 pg/mL
SI Range: 0.96-58 pmol/L
Angiotensin-converting enzyme
Specimen: Serum
Conversion Factor: 16.667
US Range:<40 U/L
SI Range: <670 nkat/L
Anion gap Na+–(Cl- + HCO3-)
Specimen: Serum, Plasma
Conversion Factor: 1
US Range:8-16 mEq/L
SI Range: 8-16 mmol/L
Antidiuretic hormone (ADH)
Specimen: Plasma
Conversion Factor: 0.923
US Range:1-5 pg/mL
SI Range: 0.9-4.6 pmol/L
Antithrombin III
Specimen: Plasma
Conversion Factor: 10
US Range:21-30 mg/dL
SI Range: 210-300 mg/L
α1-Antitrypsin
Specimen: Serum
Conversion Factor: 0.184
US Range:78-200 14.5-36.5
SI Range: 14.5-36.5 µmol/L
Apolipoprotein A-I
Specimen: Serum
Conversion Factor: 0.01
US Range:80-151 mg/dL
SI Range: 0.8-1.5 g/L
Apolipoprotein B
Specimen: Serum, Plasma
Conversion Factor: 0.01
US Range:50-123 mg/dL
SI Range: 0.5-1.2 g/L
Arginine
Specimen: Serum
Conversion Factor: 57.05
US Range:0.37-2.40 mg/dL
SI Range: 21-138 µmol/L
Arsenic
Specimen: Whole blood
Conversion Factor: 0.0133
US Range:2-23 µg/L
SI Range: 0.03-0.31 µmol/L
Asparagine
Specimen: Plasma
Conversion Factor: 75.689
US Range:0.40-0.91 mg/dL
SI Range: 30-69 µmol/L
Aspartate aminotransferase (AST)
Specimen: Serum
Conversion Factor: 0.0167
US Range:10-30 U/L
SI Range: 0.17-0.51 µkat/L
Aspartic acid
Specimen: Plasma
Conversion Factor: 75.13
US Range:<0.3 mg/dL
SI Range: <25 µmol/L
Atrial natriuretic hormone
Specimen: Plasma
Conversion Factor: 0.325
US Range:20-77 pg/mL
SI Range: 6.5-2.5 pmol/L
Base excess
Specimen: Whole blood
Conversion Factor: 1
US Range:–2 to 3 mEg/L
SI Range: –2 to 3 mmol/L
Bicarbonate
Specimen: Serum
Conversion Factor: 1
US Range:21-28 mEq/L
SI Range: 21-28 mmol/L
Bile acids (total)
Specimen: Serum
Conversion Factor: 2.448
US Range:0.3-2.3 µg/mL
SI Range: 0.73-5.63 µmol/L
Bilirubin, total
Specimen: Serum
Conversion Factor: 17.104
US Range:0.3-1.2 mg/dL
SI Range: 5.0-21.0 µmol/L
Bilirubin, direct (conjugated)
Specimen: Serum
Conversion Factor: 17.104
US Range:0.1-0.3 mg/dL
SI Range: 1.7-5.1 µmol/L
Biotin
Specimen: Serum
Conversion Factor: 0.00409
US Range:200-500 pg/mL
SI Range: 0.82-2.05 nmol/L
Bismuth
Specimen: Whole blood
Conversion Factor: 4.785
US Range:1-12 µg/L
SI Range: 4.8-57.4 nmol/L
Carbon dioxide, Pco2
Specimen: Arterial blood
Conversion Factor: 0.133
US Range:35-45 mEq/L
SI Range: 4.7-5.9 kPa
ph
Specimen: Arterial blood
Conversion Factor: 1
US Range:7.35-7.45
SI Range: 7.35-7.45
Oxygen, Po2
Specimen: Arterial blood
Conversion Factor: 0.133
US Range:80-100
SI Range: 11-13 kPa
Brain-type natriuretic peptide (BNP)
Specimen: Plasma
Conversion Factor: 1
US Range:<167 pg/mL
SI Range: <167 ng/L
Bromide (toxic)
Specimen: Serum
Conversion Factor: 0.0125
US Range:>1250 µg/mL
SI Range: >15.6 mmol/L
C1 esterase inhibitor
Specimen: Serum
Conversion Factor: 10
US Range:12-30 mg/dL
SI Range: 120-300 mg/L
C3 complement
Specimen: Serum
Conversion Factor: 0.001
US Range:1200-1500 µg/mL
SI Range: 1.2-1.5 g/L
C4 complement
Specimen: Serum
Conversion Factor: 0.001
US Range:350-600 µg/mL
SI Range: 0.35-0.60 g/L
Cadmium
Specimen: Whole blood
Conversion Factor: 8.896
US Range:0.3-1.2 µg/L
SI Range: 2.7-10.7 nmol/L
Caffeine
Specimen: Serum, Plasma
Conversion Factor: 0.515
US Range:3-15 µg/L
SI Range: 2.5-7.5 µmol/L
Calcitonin
Specimen: Plasma
Conversion Factor: 0.292
US Range:3-26 pg/mL
SI Range: 0.8-7.6 pmol/L
Calcium, ionized
Specimen: Serum
Conversion Factor: 0.25
US Range:4.60-5.08 mg/dL
SI Range: 1.15-1.27 mmol/L
Calcium, total
Specimen: Serum
Conversion Factor: 0.25
US Range:8.2-10.2 mg/dL
SI Range: 2.05-2.55 mmol/L
Cancer antigen (CA) 125
Specimen: Serum
Conversion Factor: 1
US Range:<35 U/mL
SI Range: <35 kU/L
Carbamazepine
Specimen: Serum, Plasma
Conversion Factor: 4.233
US Range:8-12 µg/mL
SI Range: 34-51 µmol/L
Carbon dioxide (total)
Specimen: Serum, Plasma
Conversion Factor: 1
US Range:22-28 mEq/L
SI Range: 22-28 mmol/L
Carboxyhemoglobin, toxic
Specimen: Whole blood
Conversion Factor: 0.01
US Range:>20 %
SI Range: >0.2 Proportion of 1.0
Carcinoembryonic antigen (CEA)
Specimen: Serum
Conversion Factor: 1
US Range:<3.0 µg/L
SI Range: <3.0 µg/L
β-Carotene
Specimen: Serum
Conversion Factor: 0.01863
US Range:10-85 µg/dL
SI Range: 0.2-1.6 µmol/L
Carotenoids
Specimen: Serum
Conversion Factor: 0.01863
US Range:50-300 µg/dL
SI Range: 0.9-5.6 µmol/L
Ceruloplasmin
Specimen: Serum
Conversion Factor: 10
US Range:20-40 mg/dL
SI Range: 200-400 mg/L
Chloramphenicol
Specimen: Serum
Conversion Factor: 3.095
US Range:10-25 µg/mL
SI Range: 31-77 µmol/L
Chlordiazepoxide
Specimen: Serum, Plasma
Conversion Factor: 3.336
US Range:0.4-3.0 µg/mL
SI Range: 1.3-10.0 µmol/L
Chloride
Specimen: Serum, Plasma
Conversion Factor: 1
US Range:96-106 mEq/L
SI Range: 96-106 mmol/L
Chlorpromazine
Specimen: Plasma
Conversion Factor: 3.126
US Range:50-300 ng/mL
SI Range: 157-942 nmol/L
Chlorpropamide
Specimen: Plasma
Conversion Factor: 3.61
US Range:75-250 mg/L
SI Range: 270-900 µmol/L
Cholesterol (total) Desirable
Specimen: Serum, Plasma
Conversion Factor: 0.0259
US Range:<200 mg/dL
SI Range: <5.18 mmol/L
Cholesterol (total) Borderline high
Specimen: Serum, Plasma
Conversion Factor: 0.0259
US Range:200-239 mg/dL
SI Range: 5.18-6.18 mmol/L
Cholesterol (total) High
Specimen: Serum, Plasma
Conversion Factor: 0.0259
US Range:640 mg/dL
SI Range: 6.21 mmol/L
Cholesterol, high-density (HDL) (low level)
Specimen: Serum, Plasma
Conversion Factor: 0.0259
US Range:<40 mg/dL
SI Range: <1.03 mmol/L
Cholesterol, low-density (LDL) (high level)
Specimen: Serum, Plasma
Conversion Factor: 0.0259
US Range:>160 mg/dL
SI Range: 4.144 mmol/L
Cholinesterase
Specimen: Serum
Conversion Factor: 2.793
US Range:5-12 mg/L
SI Range: 14-39 nmol/L
Chorionic gonadotropin (ß-hCG) (nonpregnant)
Specimen: Serum
Conversion Factor: 1
US Range:5 mIU/mL
SI Range: 5 IU/L
Chromium
Specimen: Whole blood
Conversion Factor: 19.232
US Range:0.7-28.0 µg/L
SI Range: 13.4-538.6 nmol/L
Citrate
Specimen: Serum
Conversion Factor: 52.05
US Range:1.2-3.0 mg/dL
SI Range: 60-160 µmol/L
Citrulline
Specimen: Plasma
Conversion Factor: 57.081
US Range:0.2-1.0 mg/dL
SI Range: 12-55 µmol/L
Clonazepam
Specimen: Serum
Conversion Factor: 0.317
US Range:10-50 ng/mL
SI Range: 0.4-15.8 nmol/L
Clonidine
Specimen: Serum, Plasma
Conversion Factor: 4.35
US Range:1.0-2.0 ng/mL
SI Range: 4.4-8.7 nmol/L
Clozapine
Specimen: Serum
Conversion Factor: 0.003
US Range:200-350 ng/mL
SI Range: 0.6-1.0 µmol/L
Coagulation factor I
Specimen: Plasma
Conversion Factor: 29.41
US Range:0.15-0.35 g/dL
SI Range: 4.4-10.3 µmol/L
(Fibrinogen)
Specimen: Plasma
Conversion Factor: g/L
US Range:150-350 mg/dL
SI Range: 1.5-3.5 g/L
Coagulation factor II (prothrombin)
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Coagulation factor V
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Coagulation factor VII
Specimen: Plasma
Conversion Factor: 0.01
US Range:60-140 %
SI Range: 0.60-1.40 Proportion of 1.0
Coagulation factor VIII
Specimen: Plasma
Conversion Factor: 0.01
US Range:50-200 %
SI Range: 0.50-2.00 Proportion of 1.0
Coagulation factor IX
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Coagulation factor X
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Coagulation factor XI
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Coagulation factor XII
Specimen: Plasma
Conversion Factor: 0.01
US Range:70-130 %
SI Range: 0.70-1.30 Proportion of 1.0
Cobalt
Specimen: Serum
Conversion Factor: 16.968
US Range:4.0-10.0 µg/L
SI Range: 67.9-169.7 nmol/L
Cocaine (toxic)
Specimen: Serum
Conversion Factor: 3.297
US Range:>1000 ng/mL
SI Range: >3300 nmol/L
Codeine
Specimen: Serum
Conversion Factor: 3.34
US Range:10-100 ng/mL
SI Range: 33-334 nmol/L
Coenzyme Q10 (ubiquinone)
Specimen: Plasma
Conversion Factor: 1
US Range:0.5-1.5 µg/mL
SI Range: 0.5-1.5 mg/L
Copper
Specimen: Serum
Conversion Factor: 0.157
US Range:70-140 µg/dL
SI Range: 44866 µmol/L
Coproporphyrin
Specimen: Urine
Conversion Factor: 1.527
US Range:<200 µg/24h
SI Range: <300 µmol/d
Corticotropin
Specimen: Plasma
Conversion Factor: 0.22
US Range:<120 pg/mL
SI Range: <26 pmol/L
Cortisol
Specimen: Serum, Plasma
Conversion Factor: 27.588
US Range:5-25 µg/dL
SI Range: 140-690 nmol/L
Cotinine
Specimen: Plasma
Conversion Factor: 5.675
US Range:0-8 µg/L
SI Range: 0-45 nmol/L
C-peptide
Specimen: Serum
Conversion Factor: 0.331
US Range:0.5-2.5 ng/mL
SI Range: 0.17-0.83 nmol/L
C-reactive protein
Specimen: Serum
Conversion Factor: 9.524
US Range:0.08-3.1 mg/L
SI Range: 0.76-28.5 nmol/L
Creatine
Specimen: Serum
Conversion Factor: 76.25
US Range:0.1-0.4 mg/dL
SI Range: 8-31 µmol/L
Creatine kinase (CK)
Specimen: Serum
Conversion Factor: 0.0167
US Range:40-150 U/L
SI Range: 0.67-2.5 µkat/L
Creatine kinase–MB fraction
Specimen: Serum
Conversion Factor: 1
US Range:0-7 µg/L
SI Range: 0-7 µg/L
Creatinine
Specimen: Serum, Plasma
Conversion Factor: 88.4
US Range:0.6-1.2 mg/dL
SI Range: 53-106 µmol/L
Creatinine clearance
Specimen: Serum, Plasma
Conversion Factor: 0.0167
US Range:75-125 mL/min/1.73m2
SI Range: 1.24-2.08 mL/s/m2
Cyanide (toxic)
Specimen: Whole blood
Conversion Factor: 23.24
US Range:>1.0 µg/mL
SI Range: >23 µmol/L
Cyclic adenosine monophosphate (cAMP)
Specimen: Plasma
Conversion Factor: 3.04
US Range:4.6-8.6 ng/mL
SI Range: 14-26 µmol/L
Cyclosporine
Specimen: Serum
Conversion Factor: 0.832
US Range:100-400 ng/mL
SI Range: 83-333 nmol/L
Cystine
Specimen: Plasma
Conversion Factor: 41.615
US Range:0.40-1.40 mg/dL
SI Range: 16-60 µmol/L
D-dimer
Specimen: Plasma
Conversion Factor: 5.476
US Range:<0.5 µg/mL
SI Range: <3.0 nmol/L
Dehydroepiandrosterone (DHEA)
Specimen: Serum
Conversion Factor: 3.47
US Range:1.8-12.5 ng/mL
SI Range: 6.2-43.3 nmol/L
Dehydroepiandrosterone sulfate (DHEA-S)
Specimen: Serum
Conversion Factor: 0.027
US Range:50-450 µg/dL
SI Range: 1.6-12.2 µmol/L
Deoxycorticosterone
Specimen: Serum
Conversion Factor: 0.0303
US Range:2-19 ng/dL
SI Range: 61-576 nmol/L
Desipramine
Specimen: Serum, Plasma
Conversion Factor: 3.754
US Range:50-200 ng/mL
SI Range: 170-700 nmol/L
Diazepam
Specimen: Serum, Plasma
Conversion Factor: 0.0035
US Range:100-1000 ng/mL
SI Range: 0.35-3.51 µmol/L
Digoxin
Specimen: Plasma
Conversion Factor: 1.281
US Range:0.5-2.0 ng/mL
SI Range: 0.6-2.6 nmol/L
Diltiazem
Specimen: Serum
Conversion Factor: 2.412
US Range:<200 mg/L
SI Range: <480 µmol/L
Disopyramide
Specimen: Serum, Plasma
Conversion Factor: 2.946
US Range:2.8-7.0 µg/mL
SI Range: 8.3-22.0 µmol/L
Dopamine
Specimen: Plasma
Conversion Factor: 6.528