Signs You Might Need a Vitamin B12 or Iron Check

Persistent tiredness gets blamed on a lot of things — poor sleep, stress, a busy schedule. But if it's been dragging on for weeks with no obvious cause, low vitamin B12 or iron levels are worth ruling out.

Common signs of low B12 or iron

Symptoms can overlap, but commonly include:

• Ongoing fatigue that doesn't improve with rest

• Pale skin

• Shortness of breath during everyday activity

• Difficulty concentrating or "brain fog"

• Dizziness or headaches

• For B12 specifically: pins and needles, or a sore tongue

None of these on their own confirm a deficiency, plenty of things can cause tiredness, but if several apply and you can't explain them another way, a blood test is the most reliable way to actually find out rather than guessing.

Who's more at risk?

Certain groups are more prone to low B12 or iron, including people following a vegan or vegetarian diet, women with heavy periods, older adults, and people with certain digestive conditions that affect nutrient absorption. That said, deficiency can affect anyone, so it's not worth ruling yourself out just because you don't fit an obvious risk group.

Do I need to see a GP first?

No, you can book a private vitamin B12 or iron blood test directly with us, without a GP referral, if you'd rather check your levels sooner than a GP appointment might allow.

Booking your check in Grimsby

If you've been feeling run down and want a clearer answer than "you're probably just tired," you can book a private blood test at our Ladysmith Road or Scartho pharmacy.