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28th May 2025
A 71-year-old male is admitted under the medical team with new symptomatic anaemia.
A 71-year-old male is admitted under the medical team with new symptomatic anaemia. He is normally fit and well. He undergoes initial investigation which reveals the following:
| Hb | 73 g/L | (130-180 g/L) | CRP | <5 mg/L | (<5 mg/L) |
| WCC | 5.5 x 10^9/L | (3.6-11 x 10^9/L) | TSH | 3.5 mU/L2 | (0.4-4.0 mU/L2) |
| Platelets | 350 x 10^9/L | (150-400 x 10^9/L) | IgG lambda paraprotein 42g/L detected | ||
| B12 | 240 pg/ml | (180-1000 pg/ml) | IgG | 48 g/L | (6-16 g/L) |
| Folate | 8 ng/ml | (>4 ng/ml) | IgA | 0.9 g/L | (0.8-3 g/L) |
| Ferritin | 160 ng/ml | (10-300 ng/ml) | IgM | 0.5 g/L | (0.4-2.5 g/L) |
Which of the following investigations is needed to confirm the diagnosis?
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