Blood Test Abbreviations: A Guide to Common UK Codes
Learn what common blood test abbreviations mean, including FBC, LFT and CRP, and understand how blood test codes appear on UK laboratory forms.
Receiving a blood test result or laboratory request form can sometimes feel like reading a foreign language. Abbreviations such as FBC, LFT and CRP appear routinely on laboratory documentation, yet their full meanings are rarely explained. This guide aims to demystify common blood test abbreviations, providing a practical UK-based reference for anyone seeking to better understand the terminology used on laboratory forms and result summaries. If you also want broader pathway context, see our health concerns screening hub.
What Are Blood Test Abbreviations?
Blood test abbreviations are shortened codes used by laboratories and healthcare professionals to refer to specific tests or panels of tests. Rather than writing out a full test name — such as Full Blood Count or Liver Function Tests — laboratories use concise codes to make documentation faster, clearer and more consistent across laboratory request forms, result reports and clinical records.
It is worth noting that while many abbreviations are widely recognised across UK laboratories, terminology is not entirely standardised. One laboratory may use slightly different codes or groupings to another, so the abbreviation you see on your form may not always carry an identical meaning in every context.
Common Blood Test Abbreviations: A Reference Table
The table below covers frequently used blood test codes in UK laboratory medicine. This is intended as a general educational reference only.
| Abbreviation | Full Term | What It Generally Relates To |
|---|---|---|
| FBC | Full Blood Count | Blood cells and related measurements |
| LFT | Liver Function Tests | Markers associated with liver function |
| CRP | C-reactive Protein | Marker associated with inflammation |
| U&E | Urea and Electrolytes | Kidney-related and electrolyte measurements |
| HbA1c | Glycated Haemoglobin | Long-term blood glucose regulation |
| TFT | Thyroid Function Tests | Markers associated with thyroid activity |
| ESR | Erythrocyte Sedimentation Rate | General inflammation marker |
| INR | International Normalised Ratio | Blood clotting assessment |
| PSA | Prostate-Specific Antigen | Marker associated with prostate health |
| TSH | Thyroid Stimulating Hormone | Thyroid regulation marker |
| Free T4 | Free Thyroxine | Thyroid hormone measurement |
| ALT | Alanine Aminotransferase | Liver enzyme marker |
| AST | Aspartate Aminotransferase | Liver and muscle enzyme marker |
| ALP | Alkaline Phosphatase | Liver and bone-associated enzyme |
| GGT | Gamma-Glutamyl Transferase | Liver enzyme marker |
| HDL | High-Density Lipoprotein | Cholesterol fraction |
| LDL | Low-Density Lipoprotein | Cholesterol fraction |
| B12 | Vitamin B12 | Vitamin level measurement |
| Folate | Folate (Folic Acid) | B-vitamin level measurement |
| Ferritin | Ferritin | Iron storage marker |
Practical Insight: An abbreviation can tell you the name of a test, but it does not on its own explain whether an individual result is appropriate for you.
What Does FBC Mean on a Blood Test?
FBC stands for Full Blood Count, one of the most frequently requested tests in UK laboratory medicine. A Full Blood Count assesses several broad components of the blood, typically including:
- Red blood cells — cells that carry oxygen around the body
- White blood cells — cells involved in the body’s immune response
- Platelets — cells involved in blood clotting
- Haemoglobin — the protein within red blood cells that carries oxygen
- Haematocrit — the proportion of blood made up of red blood cells
- Mean Corpuscular Volume (MCV) — relating to the size of red blood cells
The FBC is generally a panel of measurements rather than a single figure. When you receive a result labelled as an FBC, you will typically see a number of individual values alongside it. Each of those individual measurements has its own reference range, which is stated by the laboratory conducting the test.
Blood test abbreviations FBC is among the most searched terms in this area, which reflects how commonly patients encounter this code on their laboratory paperwork.
Practical Insight: The FBC abbreviation refers to the test panel as a whole. Individual results within that panel each carry their own significance and should be considered in the context of the laboratory’s stated reference ranges.
If you are considering a full body check in london, a Full Blood Count is often included as part of a broader blood testing panel.
What Does LFT Mean on a Blood Test?
LFT stands for Liver Function Tests, which is commonly used in UK laboratory settings to describe a group of measurements associated with liver function and health. Despite the name suggesting a single test, an LFT is generally a panel that may include markers such as:
- ALT (Alanine Aminotransferase) — an enzyme commonly associated with liver cells
- AST (Aspartate Aminotransferase) — an enzyme found in the liver and other tissues
- ALP (Alkaline Phosphatase) — an enzyme associated with both liver and bone
- GGT (Gamma-Glutamyl Transferase) — an enzyme associated with the liver and bile ducts
- Bilirubin — a breakdown product of red blood cells processed by the liver
- Albumin — a protein produced by the liver
- Total Protein — a combined measure of proteins in the blood
The exact markers included in an LFT panel may vary depending on the laboratory or the context in which the test has been requested. Blood test abbreviations LFT is an important concept to understand precisely because the abbreviation encompasses several distinct measurements. If you want a dedicated lipid marker breakdown alongside these terms, review our cardiovascular risk markers page.
Practical Insight: Knowing what LFT stands for is a useful starting point. Understanding what each individual marker within the panel relates to requires looking beyond the abbreviation itself.
What Does CRP Mean in a Blood Test?
CRP stands for C-reactive Protein, a protein produced by the liver in response to inflammation. CRP is commonly used in laboratory medicine as a general marker that may provide information about inflammatory processes in the body.
It is important to understand that CRP is not specific to any single condition. An elevated CRP result may be associated with a wide range of factors and circumstances. The measurement itself — and any associated result — requires appropriate context and should not be interpreted from the abbreviation alone.
Blood test abbreviations CRP is frequently searched by patients who have seen this code on a laboratory form or result summary and wish to understand what it refers to.
Practical Insight: CRP measures a specific protein in the blood. An abbreviation does not provide a diagnosis, and a single result should always be considered alongside other clinical information.
For readers comparing broad preventive options, our private men's full health check in london page outlines common men’s screening pathways.
Do Blood Test Abbreviations Have Reference Ranges?
This is an important distinction that is worth clarifying carefully. Blood test abbreviations themselves do not have reference ranges. The reference range belongs to the individual measurement or biomarker within the test — not to the abbreviation used to describe the test panel.
For example:
- "FBC" is an abbreviation for a test panel — it does not have a single reference range
- Within an FBC, haemoglobin has a reference range, and that range may differ between men and women
- Within an LFT, ALT has a reference range, and that range may differ between laboratories
Reference ranges can also vary depending on:
- The laboratory’s own analytical method
- The reagents and equipment used
- The age and biological sex of the individual, where clinically relevant
- The units in which the result is expressed
When reviewing a laboratory result, always refer to the reference range stated by the laboratory that conducted the test. Comparing a result to a range from a different source or from a different laboratory method may not be appropriate.
Practical Insight: Reference ranges belong to the individual measurement and the laboratory method used — not to the abbreviation itself. Always use the reference range provided on your specific laboratory report.
Blood Test Codes on Laboratory Forms and Reports
People encounter blood test form abbreviations in several places:
- Laboratory request forms — completed when a blood test is ordered, listing the tests to be performed
- Laboratory result summaries — the report returned after analysis of a blood sample
- Appointment documentation — where specific tests may be listed by code
- Health screening reports — such as those provided through structured preventive blood testing pathways
The coding system used on a laboratory request form may differ slightly between healthcare providers and laboratory suppliers. If you are uncertain what a particular abbreviation on your form refers to, the laboratory or the provider who requested the test should be able to clarify the full test name.
Blood Test Abbreviations in the UK Context
In UK laboratory medicine, certain abbreviations are widely recognised across NHS and private laboratory settings, including:
- FBC — Full Blood Count
- U&E — Urea and Electrolytes (commonly used to assess kidney function and electrolyte balance)
- LFT — Liver Function Tests
- TFT — Thyroid Function Tests
- CRP — C-reactive Protein
- HbA1c — Glycated Haemoglobin (commonly associated with blood glucose regulation over time)
While these abbreviations are broadly familiar across UK settings, it remains the case that individual laboratories may use slightly different terminology, particularly in private laboratory medicine. Those seeking a women's health check up in london will typically receive laboratory documentation that includes these standard UK abbreviations alongside their full test names.
Blood Test Abbreviations and Bone Testing
Patients sometimes search for blood test abbreviations UK bone, which reflects an interest in understanding what laboratory tests relate to bone health. In UK laboratory medicine, bone-related testing is often referred to as a bone profile or bone screen, which may include measurements such as:
- Calcium — a mineral with important roles in bone structure and wider physiology
- Phosphate — a mineral associated with bone metabolism
- ALP (Alkaline Phosphatase) — an enzyme found in bone and liver tissue
- Vitamin D — relevant to calcium absorption and bone health, where tested
The terminology used for bone-related panels can vary between laboratories. Some may refer to individual markers rather than a named panel. As with other test groups, the bone profile abbreviation encompasses several distinct measurements, each with its own reference range.
Practical Insight: The term "bone profile" describes a group of measurements rather than a single test. Individual markers within that panel each have their own reference range, which may vary between laboratories.
How to Read a Blood Test Abbreviation: A Practical Guide
When you encounter a blood test abbreviation on a form or report, the following approach may be useful:
- Identify the abbreviation — note the code as it appears on the document
- Find the full test name — look for an expanded name on the same document, or refer to a reliable source
- Understand what the test measures — consider whether it refers to a single biomarker or a panel of measurements
- Locate the laboratory’s stated reference range — this will be specific to the individual measurement, not the abbreviation
- Check the units — laboratory results are expressed in specific units that form part of the interpretation
- Avoid interpreting from the abbreviation alone — the same abbreviation may encompass different markers in different settings
- Seek appropriate advice when clinical interpretation is needed — a healthcare professional can help contextualise individual results
Frequently Asked Questions
1. What are the most common blood test abbreviations?
Common blood test abbreviations in the UK include FBC (Full Blood Count), LFT (Liver Function Tests), CRP (C-reactive Protein), U&E (Urea and Electrolytes), TFT (Thyroid Function Tests), HbA1c (Glycated Haemoglobin) and ESR (Erythrocyte Sedimentation Rate). These abbreviations appear routinely on laboratory request forms and result summaries and refer to specific tests or panels of tests used in laboratory medicine.
2. What does FBC mean on a blood test?
FBC stands for Full Blood Count. It is a panel of measurements that generally assesses red blood cells, white blood cells, platelets, haemoglobin and related values. Rather than a single result, an FBC typically produces a number of individual measurements. Each measurement has its own reference range as stated by the laboratory. FBC is one of the most frequently encountered blood test abbreviations in UK laboratory medicine.
3. What does LFT mean on a blood test?
LFT stands for Liver Function Tests. Despite suggesting a single test, LFT is generally a panel of measurements that may include markers such as ALT, AST, ALP, GGT, bilirubin, albumin and total protein. The exact composition of an LFT panel may vary between laboratories. Each marker within the panel has its own reference range and relates to a different aspect of liver-related biochemistry.
4. What does CRP mean in a blood test?
CRP stands for C-reactive Protein. It is a protein produced by the liver and is commonly measured as a general marker associated with inflammatory processes. CRP is not specific to any single condition, and a result requires appropriate context. An elevated CRP level may be associated with a range of circumstances. Blood test abbreviations CRP appears frequently in laboratory documentation and on health screening reports.
5. What do blood test codes mean?
Blood test codes are abbreviated identifiers used by laboratories to refer to specific tests or panels of tests. They are used on laboratory request forms, result reports and clinical documentation to make recording faster and more consistent. The exact code used may vary between laboratories and healthcare providers. To understand what a specific code means, it is advisable to refer to the full test name on the same document.
6. Do blood test abbreviations have reference ranges?
Blood test abbreviations themselves do not have reference ranges. The reference range belongs to the individual measured biomarker, not to the abbreviation. For example, FBC as an abbreviation does not carry a reference range, but individual measurements within an FBC — such as haemoglobin — do. Reference ranges may also vary between laboratories, between sexes and depending on the analytical method used.
7. What does a blood test form abbreviation mean?
A blood test form abbreviation is a shortened code on a laboratory request form or result document that indicates which test or panel of tests has been requested or performed. Common examples include FBC, LFT and CRP. If you encounter an abbreviation you do not recognise on a laboratory form, the provider who arranged the testing or the laboratory itself should be able to supply the full test name.
8. What is the difference between FBC and LFT?
FBC (Full Blood Count) and LFT (Liver Function Tests) are distinct test panels that assess different aspects of health. FBC focuses on blood cells and related measurements, including red cells, white cells and platelets. LFT focuses on markers associated with liver function, including liver enzymes and proteins. Both are common blood test abbreviations in UK laboratory medicine and may appear together on a blood test request form.
9. What blood test abbreviations are commonly used in the UK?
Commonly used blood test abbreviations in the UK include FBC, LFT, U&E, CRP, TFT, HbA1c, ESR, INR and PSA. These are widely recognised in both NHS and private laboratory settings, though terminology may vary slightly between providers. Private health screening providers typically use standard UK abbreviations on laboratory documentation, often accompanied by the full test name for clarity.
10. Where can I find the full name of a blood test abbreviation?
The full name of a blood test abbreviation is usually found on the same laboratory document — either on the request form or the result report. If the full name is not provided, the laboratory that conducted the test or the provider who arranged the test should be able to clarify it. Educational resources, such as this guide, can also help identify common abbreviations and what they generally refer to.
Explore Laboratory Testing Options
Understanding blood test abbreviations is a useful first step in becoming more familiar with your health data. From there, comparing panel scope, units, and trend-based follow-up over time can provide a more meaningful picture than looking at a single isolated value.
For those with an interest in blood markers, the most reliable approach is to review each result alongside its own laboratory reference interval and discuss any persistent concerns with an appropriate clinician.
Familiarity with laboratory terminology helps you engage more confidently with your health information — and understanding what an abbreviation means is a practical starting point for that journey.