Serological parameters, histopathological and microbiological workup of the case
| Investigations | Reports (Reference values) |
| Haemoglobin | 11.7 g/dL (13–17 g/dL) |
| TLC | 7.6×109/L (4−11×109/L) |
| ESR | 4 mm/hour (0–20 mm/hour) |
| CRP | 4.6 mg/L (0–6 mg/L) |
| Glucose (random) | 160 mg/dL (60–140 mg/dL) |
| HbA1c | 7.1% (<6.5%) |
| Total serum protein | 7.40 g/dL (6–8 gm/dL) |
| Serum albumin | 4.72 g/dL (3.5–5 gm/dL) |
| Serum calcium | 9.3 mg/dL (8.9–10.3 mg/dL) |
| Serum phosphorus | 3 mg/dL (2.4–4.7 mg/dL) |
| ALP | 110 U/L (50–140 U/L) |
| Serum urea | 20 mg/dL (10–40 mg/dL) |
| Serum creatinine | 0.8 mg/dL (0.6–1.4 mg/dL) |
| Bence Jones protein (urine) | Negative |
| Culture and sensitivity | No growth |
| PCR (nested) for MTB | Negative |
| Bone marrow aspirate and biopsy | No evidence of Infiltration |
| Serum electrophoresis | No M band seen |
| Immunofixation electrophoresis | Increased IgG kappa, high K/L ratio |
| Tissue biopsy | Sheets of malignant plasma cells seen |
| CD138 | Positive for tumour cells |
ALP, alkaline phosphatase; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; HbA1c, glycated haemoglobin; MTB, Mycobacterium Tuberculosis; TLC, total leucocyte count.