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Original poster

Can anyone medical help with these blood test results please

7 replies

Universitydilema · 17/09/2026 06:51

My 78 year old mum had some blood tests last year and was told they were fine. She recently downloaded that nhs app and has looked at the results. Sh is suffering from severe anxiety and is now really worried that some of them should have been investigated. Can anyone help calm her down as I’m not sure and she is too anxious to call her GP right now. She is terrified she has kidney failure.

Ured and electrolytes note. the time between specimen collection and processing in the lab may have been over 8 hours. If so, potassium result may be slightly elevated above the true result.
Serum sodium level 134 mmol/L [133.0 - 146.0]
Serum potassium level 5.7 mmol/L 13.5 - 5.3]; Above high reference limit
Serum creatinine level 82 umol/L [45.0 - 84.0]
eGFR using creatinine (CKD-EPI) per 1.73 square metres 59 mL/min [> 60.0]; eGFR has been calculated using the CKD-EPI creatinine equation. Please note that adjustment for race is no longer recommended by NICE.(NICE
Guidance NG 203); Below low reference limit
General Information

OP posts:
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ClarasSisters · 17/09/2026 14:12

Universitydilema · 17/09/2026 07:20

Thank you so so much @AppropriateAdult . I will tell her this morning. That’s incredibly reassuring.

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Why is a post on an internet message board, from someone who says that they are a GP but you have no proof either way, any more reassurance than being given exactly the same answer from her own actual GP?

Passaggressfedup · 17/09/2026 10:52

A very marginal above or below result is rarely a concern alone.

I have one result relating to my blood cells that has been quite a bit above the top range every since I remember, 15 years or so. Three different doctors and practices, not once was it questioned. I'm still alive and kicking!

Original poster
Universitydilema · 17/09/2026 07:20

AppropriateAdult · 17/09/2026 07:15

GP here. Obviously it’s not good practice to diagnose strangers on the internet, but I can certainly confirm what her own GP has already told her. Her sodium is fine. Her potassium is slightly raised, which is most commonly a result of delayed processing in the lab rather than anything else. Her creatinine is normal (and in fact very good for someone of 78). She does not have kidney failure.

Thank you so so much @AppropriateAdult . I will tell her this morning. That’s incredibly reassuring.

OP posts:
AppropriateAdult · 17/09/2026 07:15

GP here. Obviously it’s not good practice to diagnose strangers on the internet, but I can certainly confirm what her own GP has already told her. Her sodium is fine. Her potassium is slightly raised, which is most commonly a result of delayed processing in the lab rather than anything else. Her creatinine is normal (and in fact very good for someone of 78). She does not have kidney failure.

Original poster
Universitydilema · 17/09/2026 06:55

@Anothercake thavk you… I think the potassium alarmed her but I know it says sample could have been more than 8 hours old so that could explain it… sodium looks a little low too

OP posts:
DoAWheelie · 17/09/2026 06:53

Why would she trust some rando on mumsnet over her own doctor who has seen the results and told her it's fine?

She needs to get help to manage her anxiety, not question her blood results online where you have no idea if the person replying is qualified.

Anothercake · 17/09/2026 06:53

If she doesn't drink much water that will lower her GFR, which is lower in older people anyway. If she'd drank a couple of litres in the hours before the test it would've been higher.

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