Electrolytes are a one-test department. The panel is sodium, potassium and chloride, serum, by ISE. Opening price ₹400. It is not bundled inside KFT.
Sodium under the age of 2 opens at 133–146 mmol/L. From 2 years it is 136–145. Critical marks sit at 120 and 160. Potassium is tighter, and it changes three times: the first month, then up to 18 years, then adults at 3.5–5.1 mmol/L. Critical marks on potassium are 2.5 on the low side and 6.5 or 7.0 on the high side, depending on the age band. Chloride opens at 98–107 mmol/L with no separate critical mark.
A critical mark is still a mark on a stored range. It does not phone anyone and it does not hold the report back. The person approving the page sees the flag. Calcium, phosphorus and magnesium are not on this panel. They are single biochemistry tests.