Diabetic boy's kidney declining?

[tontita]

Hi everyone,

I have a little concern about my 12yr old diabetic cat's bloodwork
and urinalysis result he had recently.
His vet thinks that he is in early stage of kidney failure and
prescribed two oral medicines: Fortekor and Covalzin.
Covalzin is to bind toxin. (I live in Japan.)
I have been reading some related threads and links in this forum
but thought to jump in and post the result myself for your advice.

Here's his brief history.
He's been diabetic for almost 3 years.
Has history of seizure from hypoglycemia last summer
and in autumn, developed ketoacidosis twice consecutively.
The vets doubted if he would survive but he did!

Now he is on tight regulation protocol by Dr Hodgkins with home-testing
and he is also on raw diet since last November, although
I am so unconfident if calcium-phosphorus ratio is OK.
It really changed his condition remarkably and he started
play like he used to and he has also gained his weight. It was incredible.
Now I dose him 2 - 3 times a day and his blood glucose seem to
stay under 200 these day except when I oversleep and miss the timing.


<Bloodwork> (average)

(Sorry, I don't know how to convert the numbers..and
I don't know what some of them mean, either..)

WBC 9000 (6000-15000)
RBC 768 (550-1000)
Plate 16.9 (10-80)
Ht 38.3% (25-45)
Hb 13.9 g/dL (8-14)
MCV 49.9
MCH 18.1
MCHC 36.3

BUN 74mg/dL (17-40)
CRE 2.4mg/dL (0.6-2.4)
IP 5.0mg/dL (1.7-7.2)
Na 158 (147-156)
K 4.1 (3.5-5.1)
Cl 116 (117-123)

Last November, when he was critically ill, his BUN was 65mg/dL
and creatinine was 1.5mg/dL.

<Urinalysis>

PH 6.5
blood -
Proteinuria 2+
glucose -
keton -
USG 1.040

I would be happy if you let me know what you see with these numbers.
Is there anything particular about?
I understand that USG is OK and I've heard that high protein diet will
raise BUN level so it's understandable since he's switched to raw from kibble.
But he's got protein in his urine and creatinine is on the threshold.
Are these telling that his kidney has declining?

I would appreciate any thoughts and comments from you.