tiredness for several months

What do you mean came back with 3 markers only? Is there other results that where in range?

Your red blood cell width is low which could indicate anaemia if the rest of the bloods agree with it. Post the rest of your results if you have them. 

3 markers wre the ones out of range

FBC

Total white cell count 8.13 10*9/L 3.4 - 8.410*9/L

Red blood cell (RBC) count 4.76 x10*12/L 4.29 - 5.7x10*12/L

Haemoglobin estimation 141 g/L 133 - 166g/L

Haematocrit 0.43 L/L 0.41 - .52L/L

Mean corpuscular volume (MCV) 89.3 fL 86 - 102fL

Mean corpusc. haemoglobin(MCH) 29.6 pg 27 - 33pg

Mean corpusc. Hb. conc. (MCHC) 332 g/L 300 - 365g/L

Red blood cell distribut width 11.8 %  12.2 - 14.8%

Platelet count 290 10*9/L 150 - 40010*9/L

Platelet distribution width 15 %  9 - 14%

Neutrophil count 4.45 10*9/L 1.6 - 4.610*9/L

Lymphocyte count 2.77 10*9/L 1.1 - 2.910*9/L

Monocyte count 0.56 10*9/L 0.2 - .610*9/L

Eosinophil count 0.27 10*9/L 0.03 - .2810*9/L

Basophil count 0.08 10*9/L 0 - .110*9/L

LIVER AND BONE

Serum alkaline phosphatase 82 IU/L 30 - 130IU/L

Serum ALT level 14 IU/L 0 - 55IU/L

Serum total bilirubin level 7 umol/L < 21umol/L

Serum total protein 72 g/L 60 - 80g/L

Serum albumin 38 g/L 35 - 50g/L

Serum calcium 2.31 mmol/L 2.2 - 2.6mmol/L

Serum inorganic phosphate 0.72 mmol/L  0.8 - 1.5mmol/L

Serum adjusted calcium conc 2.35 mmol/L 2.2 - 2.6mmol/L

I am not a doctor. However I would recommend you ask for your vitamin d checked. Low vitamin d can cause low phosphate. Low vitamin b12, iron, ferritin, folate can all cause tiredness. Plus you have a decent amount of white blood cells which might be your normal or might be raised because it's fighting an infection. So a repeat FBC. 

Your b12 values are borderline low. If you google your result many will advocate treatment. Best to discuss with a practitioner.

Hi Kenneth - these 3 results are all only the tiniest bit outside normal limits, and none are concerning as a cause for fatigue anyway. There are many causes for fatigue, including virus infections (most common, but unusual to go on for months), anemia, poor nutrition, sleep apnea, allergies, cardiac or lung problems. If you are still having fatigue, you need to see your doctor again.