LOINC Codes

53 LOINC codes supported by MedExtract for automated lab data extraction.

Cardiac Markers

Code	Test	Unit	Reference Range
10839-9	Cardiac Troponin I	ng/mL	0 – 0.04

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

Diabetes

Code	Test	Unit	Reference Range
4548-4	Hemoglobin A1c (HbA1c)	%	4 – 5.6

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

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

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

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

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

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

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

Renal

Code	Test	Unit	Reference Range
33914-3	Estimated Glomerular Filtration Rate (eGFR)	mL/min/1.73m²	90 – 120

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

Tumor Markers

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

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

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

Code

Test

Unit

Reference Range

10839-9

Cardiac Troponin I

ng/mL

0 – 0.04

Code

Test

Unit

Reference Range

5902-2

Prothrombin Time (PT)

11 – 13.5

6301-6

International Normalized Ratio (INR)

{INR}

0.8 – 1.1

3173-2

Activated Partial Thromboplastin Time (APTT)

25 – 35

Code

Test

Unit

Reference Range

4548-4

Hemoglobin A1c (HbA1c)

4 – 5.6

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

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

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

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

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

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