Haemline

Haemline Trailer

Welcome to Haemline, your companion for bite-sized haematology learning on the go. Whether you're commuting, doing the washing up, or simply too exhausted after a long shift to read anything, we aim to deliver focused haematology education to complement the excellent podcast resources already available.

Created by practising UK haematologists, our scripts are carefully crafted to be conversational yet compact - the sort of resource we wish we'd had when starting out.

Haemline aims to offer something for everyone. Episodes fall into four categories.

General Interest - core blood knowledge for medical students, GPs, hospital doctors, and clinical nurse specialists.

Core Haematology - essential revision for FRCPath takers, but often useful to others too.

Deep Dives — niche topics for haematologists navigating increasingly subspecialised practice.

Biology Tangents — detours into the science behind the medicine.

Rapid Reviews — high-yield two to five minute briefings on key studies or concepts.

Beyond exam preparation, we aim to reinforce evidence-based thinking habits that remain critical long after outdated facts fade.

We’ve opted for a single-host format for most episodes. This keeps the style conversational yet concise, and, practically speaking, avoids the scheduling acrobatics that often derail collaborative projects. It allows us to focus on crafting carefully written episodes that make the most of your time, whilst offering a wide-ranging mix of content.

So whether you're a hospital doctor trying to investigate your patient's anaemia, a specialist trainee preparing for the FRCPath exams, or a consultant keeping current with evolving evidence, we hope Haemline becomes a useful part of your learning routine. 

New episodes released most weeks. Follow us on Spotify, Apple Podcasts, Overcast, or wherever you get your podcasts. Just search for Haemline, spelled the UK way.

We'd love to hear your thoughts, questions, or suggestions for future topics at [email protected].

Red cells: they're not just bags of haemoglobin.

In this episode of Haemline, we explore the diagnostic goldmine hiding in those RBC parameters you've possibly been scrolling past. Learn how to interpret red cell count, MCV, RDW, MCH, and MCHC in context—and why their relationships often matter more than the numbers alone.

Featuring: cold agglutinins behaving badly, the rule of threes, and why your biomedical scientist deserves more credit.

Through real clinical cases, we explore how to disentangle artefact from biology, avoid classic traps, and spot when “normal” values are anything but. Learn to distinguish thalassaemia trait from iron deficiency at a glance, discover why warming a sample can cure apparent macrocytosis, and sharpen your instincts for when the numbers just don’t fit.

Warning: May cause spontaneous checking of old blood results and suspicious squinting at MCHC values.

This is episode three in Haemline’s six-part series on the full blood count.

Episode category: General Interest

Welcome back to Haemline. This is episode two in our six-part series on the full blood count. You order it every day. You trust it—perhaps too much. You ignore parameters that might actually be useful. By the end of this series, we hope you'll never look at an FBC the same way again.

In today's episode, "Dead Cells Tell Tales: How Pre-Analytical Pitfalls Shape the FBC," we'll explore how the journey from vein to laboratory shapes those numbers you rely on to guide your clinical decisions.

Seventy percent of laboratory errors occur before analysis begins. From cold agglutinins and cryoglobulins to lipid interference and leukaemic hypermetabolism, we dissect the artefacts that mimic disease and the moments where careful scrutiny can avert a diagnostic misstep.

Episode duration: 11 minutes

Episode category: General Interest

Welcome to the first episode of Haemline, your companion for haematology learning on-the-go.

Today marks the beginning of our six-part series on the full blood count – that ubiquitous test we order countless times each day. Over the coming episodes, we'll explore everything from pre-analytical pitfalls to the clinical insights hidden within those parameters you often ignore.

In this first episode, "From Haemocytometers to AI: The FBC, Explained," we'll trace the evolution of blood counting from tedious manual methods to today's sophisticated analysers. We'll demystify how modern instruments actually count and characterise millions of cells in minutes, and explore what this automation means for clinical interpretation.

So whether you're a hospital doctor trying to investigate your patient's anaemia, a specialist trainee preparing for the FRCPath exams, or a consultant keeping current with evolving technology, we hope you will have something to take away from this journey through the most ordered test in medicine.

Episode length: 23 minutes

Episode category: General Interest