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LOINC Codes

The 148 most common LOINC codes processed by MedExtract. The system supports over 6,400 codes for automated lab data extraction.

Blood Gas

Code	Test	Unit	Reference Range
2744-1	Arterial pH		7.35 – 7.45
2019-8	Partial Pressure of CO2 (pCO2)	mmHg	35 – 45
2703-7	Partial Pressure of O2 (pO2)	mmHg	80 – 100
1925-7	Base Excess	mmol/L	-2 – 2
1963-8	Bicarbonate (HCO3)	mmol/L	22 – 26

Cardiac Markers

Code	Test	Unit	Reference Range
10839-9	Cardiac Troponin I	ng/mL	0 – 0.04
42637-9	B-type Natriuretic Peptide (BNP)	pg/mL	0 – 100
33762-6	NT-proBNP	pg/mL	0 – 125
49563-0	CK-MB Mass	ng/mL	0 – 5
2639-3	Myoglobin	ng/mL	0 – 85

Coagulation

Code	Test	Unit	Reference Range
5902-2	Prothrombin Time (PT)	s	11 – 13.5
6301-6	International Normalized Ratio (INR)	{INR}	0.8 – 1.1
3173-2	Activated Partial Thromboplastin Time (APTT)	s	25 – 35
3255-7	Fibrinogen	mg/dL	200 – 400
48065-7	D-Dimer	ng/mL{FEU}	0 – 500

Diabetes

Code	Test	Unit	Reference Range
4548-4	Hemoglobin A1c (HbA1c)	%	4 – 5.6
1558-6	Glucose 2h Post-Prandial	mg/dL	70 – 140
1986-9	C-Peptide	ng/mL	0.8 – 3.1
56540-8	HOMA-IR Index		0.5 – 2.5

Electrolytes

Code	Test	Unit	Reference Range
2951-2	Sodium	mmol/L	136 – 145
2823-3	Potassium	mmol/L	3.5 – 5.1
2075-0	Chloride	mmol/L	98 – 106
17861-6	Calcium	mg/dL	8.5 – 10.5
2777-1	Phosphorus	mg/dL	2.5 – 4.5
19123-9	Magnesium	mg/dL	1.7 – 2.2

Endocrinology

Code	Test	Unit	Reference Range
2143-6	Cortisol	ug/dL	6 – 18.4
2842-3	Prolactin	ng/mL	4 – 23
2243-4	Estradiol	pg/mL	15 – 350
2484-4	Insulin	u[IU]/mL	2.6 – 24.9
2839-9	Progesterone	ng/mL	0.2 – 25
2191-5	DHEA-Sulfate (DHEA-S)	ug/dL	35 – 430
8099-4	Anti-Thyroid Peroxidase (Anti-TPO)	[IU]/mL	0 – 34
8098-6	Anti-Thyroglobulin Antibodies	[IU]/mL	0 – 115
15067-2	Follicle Stimulating Hormone (FSH)	mIU/mL	1.5 – 12.4
10501-5	Luteinizing Hormone (LH)	mIU/mL	1.7 – 8.6
2986-8	Total Testosterone	ng/dL	270 – 1070
2991-8	Free Testosterone	pg/mL	5 – 21
2142-8	Sex Hormone-Binding Globulin (SHBG)	nmol/L	18 – 54
2731-8	Parathyroid Hormone Intact (PTH)	pg/mL	15 – 65
2963-7	Growth Hormone (GH)	ng/mL	0.05 – 3

Enzymes

Code	Test	Unit	Reference Range
2157-6	Creatine Kinase (CK/CPK)	U/L	30 – 200
1798-8	Amylase	U/L	28 – 100
3040-3	Lipase	U/L	0 – 60

Hematology

Code	Test	Unit	Reference Range
26464-8	Leukocytes (WBC)	10*3/uL	4.5 – 11
789-8	Red Blood Cells (RBC)	10*6/uL	4.2 – 5.9
718-7	Hemoglobin	g/dL	12 – 17.5
4544-3	Hematocrit	%	36 – 52
787-2	Mean Corpuscular Volume (MCV)	fL	80 – 100
28539-5	Mean Corpuscular Hemoglobin (MCH)	pg	27 – 33
28540-3	Mean Corpuscular Hemoglobin Concentration (MCHC)	g/dL	32 – 36
777-3	Platelets	10*3/uL	150 – 400
788-0	Red Cell Distribution Width (RDW)	%	11.5 – 14.5
32623-1	Mean Platelet Volume (MPV)	fL	7.5 – 11.5
32207-3	Platelet Distribution Width (PDW)	fL	9 – 17
17849-1	Reticulocytes	%	0.5 – 2.5

Immunology

Code	Test	Unit	Reference Range
8061-4	Antinuclear Antibodies (ANA)	[IU]/mL	0 – 1
53027-9	Anti-Cyclic Citrullinated Peptide (Anti-CCP)	U/mL	0 – 20
5130-0	Anti-dsDNA Antibodies	[IU]/mL	0 – 30
11572-5	Rheumatoid Factor (RF)	[IU]/mL	0 – 14
4485-9	Complement C3	mg/dL	90 – 180
4498-2	Complement C4	mg/dL	10 – 40
2465-3	Immunoglobulin A (IgA)	mg/dL	70 – 400
2464-6	Immunoglobulin G (IgG)	mg/dL	700 – 1600
2472-9	Immunoglobulin M (IgM)	mg/dL	40 – 230
2458-8	Total Immunoglobulin E (IgE)	[IU]/mL	0 – 100
33935-8	Anti-Tissue Transglutaminase IgA	U/mL	0 – 20

Inflammation

Code	Test	Unit	Reference Range
1988-5	C-Reactive Protein (CRP)	mg/L	0 – 10
4537-7	Erythrocyte Sedimentation Rate (ESR)	mm/h	0 – 20
30522-7	High-Sensitivity CRP (hs-CRP)	mg/L	0 – 3
75241-0	Procalcitonin	ng/mL	0 – 0.5

Iron Studies

Code	Test	Unit	Reference Range
2498-4	Serum Iron	ug/dL	60 – 170
2276-4	Ferritin	ng/mL	20 – 250
2502-3	Transferrin Saturation	%	20 – 50
2500-7	Total Iron Binding Capacity (TIBC)	ug/dL	250 – 370
3034-6	Transferrin	mg/dL	200 – 360

Lipid Panel

Code	Test	Unit	Reference Range
2093-3	Total Cholesterol	mg/dL	0 – 200
2085-9	HDL Cholesterol	mg/dL	40 – 60
2089-1	LDL Cholesterol	mg/dL	0 – 100
2571-8	Triglycerides	mg/dL	0 – 150
13458-5	VLDL Cholesterol	mg/dL	5 – 40
70204-3	Non-HDL Cholesterol	mg/dL	0 – 130
9830-1	Cholesterol/HDL Ratio	{ratio}	1 – 5

Liver Panel

Code	Test	Unit	Reference Range
1742-6	Alanine Aminotransferase (ALT/GPT)	U/L	7 – 56
1920-8	Aspartate Aminotransferase (AST/GOT)	U/L	10 – 40
6768-6	Alkaline Phosphatase	U/L	44 – 147
1975-2	Total Bilirubin	mg/dL	0.1 – 1.2
2324-2	Gamma-Glutamyl Transferase (GGT)	U/L	9 – 48
2885-2	Total Protein	g/dL	6 – 8.3
1751-7	Albumin	g/dL	3.5 – 5.5
1968-7	Direct Bilirubin (Conjugated)	mg/dL	0 – 0.3
14805-6	Lactate Dehydrogenase (LDH)	U/L	140 – 280

Metabolic

Code	Test	Unit	Reference Range
2345-7	Glucose	mg/dL	70 – 100
2160-0	Creatinine	mg/dL	0.7 – 1.3
3094-0	Blood Urea Nitrogen (BUN)	mg/dL	7 – 20
3084-1	Uric Acid	mg/dL	3.4 – 7

Metabolism

Code	Test	Unit	Reference Range
2524-7	Lactate	mmol/L	0.5 – 2.2
2030-5	Homocysteine	umol/L	5 – 15

Oncology

Code	Test	Unit	Reference Range
2039-6	Carcinoembryonic Antigen (CEA)	ng/mL	0 – 5
10334-1	CA 125	U/mL	0 – 35
24108-3	CA 19-9	U/mL	0 – 37
1834-1	Alpha-Fetoprotein (AFP)	ng/mL	0 – 10
21198-7	Beta-HCG	[IU]/mL	0 – 5
6875-9	CA 15-3	U/mL	0 – 31.3
35741-8	Free PSA	ng/mL	0 – 1

Prenatal Screening

Code	Test	Unit	Reference Range
33575-2	PAPP-A (Pregnancy-Associated Plasma Protein A)	mIU/mL	0.5 – 6
31427-8	Inhibin A	pg/mL	0 – 500

Protein Electrophoresis

Code	Test	Unit	Reference Range
2865-4	Alpha-1 Globulin	g/dL	0.1 – 0.3
2871-2	Beta Globulin	g/dL	0.6 – 1.1
2874-6	Gamma Globulin	g/dL	0.7 – 1.6
10834-0	Globulin	g/dL	2 – 3.5

Renal

Code	Test	Unit	Reference Range
33914-3	Estimated Glomerular Filtration Rate (eGFR)	mL/min/1.73m²	90 – 120
1754-1	Microalbumin Urine	mg/L	0 – 30
14959-1	Albumin/Creatinine Ratio (ACR)	mg/g	0 – 30
33863-2	Cystatin C	mg/L	0.6 – 1

Serology

Code	Test	Unit	Reference Range
56888-1	HIV 1/2 (Antigen/Antibody)		0 – 1
5196-1	Hepatitis B Surface Antigen (HBsAg)		0 – 1
16128-1	Anti-HCV Antibodies		0 – 1
20507-0	Rapid Plasma Reagin (RPR)		0 – 1

Therapeutic Drug Monitoring

Code	Test	Unit	Reference Range
14334-7	Lithium	mmol/L	0.6 – 1.2
4086-4	Valproic Acid	ug/mL	50 – 100
3432-1	Carbamazepine	ug/mL	4 – 12
10535-3	Digoxin	ng/mL	0.8 – 2
21364-5	Tacrolimus	ng/mL	5 – 20

Thyroid

Code	Test	Unit	Reference Range
3016-3	Thyroid Stimulating Hormone (TSH)	mIU/L	0.4 – 4
3024-7	Free T4	ng/dL	0.8 – 1.8
3051-0	Free T3	pg/mL	2.3 – 4.2
3026-2	Total T4	ug/dL	4.5 – 12
3053-6	Total T3	ng/dL	80 – 200

Tumor Markers

Code	Test	Unit	Reference Range
2857-1	Prostate-Specific Antigen (PSA)	ng/mL	0 – 4

Urinalysis

Code	Test	Unit	Reference Range
5803-2	Urine pH	{pH}	5 – 8
5811-5	Specific Gravity Urine	{SG}	1.005 – 1.03
13945-1	Red Blood Cells in Urine	/[HPF]	0 – 5
5821-4	White Blood Cells in Urine	/[HPF]	0 – 5

Vitamins

Code	Test	Unit	Reference Range
62292-8	Vitamin D (25-Hydroxy)	ng/mL	30 – 100
2132-9	Vitamin B12	pg/mL	200 – 900
2284-8	Folate (Folic Acid)	ng/mL	2.7 – 17
2923-1	Vitamin A (Retinol)	ug/dL	30 – 65
1823-4	Vitamin E (Alpha-Tocopherol)	mg/dL	0.5 – 1.8

WBC Differential

Code	Test	Unit	Reference Range
770-8	Neutrophils	10*3/uL	1.8 – 7.7
736-9	Lymphocytes	10*3/uL	1 – 4.8
5905-5	Monocytes	10*3/uL	0.2 – 0.8
713-8	Eosinophils	10*3/uL	0 – 0.5
706-2	Basophils	10*3/uL	0 – 0.1
751-8	Neutrophils %	%	40 – 70
731-0	Lymphocytes %	%	20 – 45
742-7	Monocytes %	%	2 – 10
711-2	Eosinophils %	%	1 – 6
704-7	Basophils %	%	0 – 2