[Verse 1]
CEA in the bloodstream, carcinoembryonic trace
Elevated in colorectal cancer, but don't diagnose on face
Post-op surveillance, that's the primary domain
Serial measurements tracking if the tumour comes again
CA 19-9 sits adjacent, pancreatic biliary weight
Gastric cancer utility — modest, never great
Both markers suffer specificity that's thin
False positives through benign disease creeping in
So never screen the general public, that's the golden rule
A rising post-resection CEA — now that's your sharpest tool
[Chorus]
Wir prüfen die Marker, Schicht für Schicht
Chromogranin A im Blut — vergiss es nicht
5-HIAA im Urin, Karzinoid im Sicht
Wir messen, wir testen — das ist unsere Pflicht
Marker nach Marker, wir folgen der Spur
Laborwerte zeigen die klinische Natur
[Verse 2]
Neuroendocrine tumours — different game entirely
Chromogranin A, the secretory marker fired precisely
Elevated with carcinoid, pheochromocytoma too
But PPI therapy falsely lifts it — that caveat rings true
5-HIAA in a twenty-four hour urine collection
Serotonin metabolite — carcinoid syndrome detection
Flushing, diarrhoea, wheeze: the tetrad on parade
Avoid tyramine-rich food before the sample's made
These markers carry context, carry physiologic weight
Not checkbox exercises — clinical stories that you integrate
[Chorus]
Wir prüfen die Marker, Schicht für Schicht
Chromogranin A im Blut — vergiss es nicht
5-HIAA im Urin, Karzinoid im Sicht
Wir messen, wir testen — das ist unsere Pflicht
Marker nach Marker, wir folgen der Spur
Laborwerte zeigen die klinische Natur
[Verse 3]
Nutritional status — albumin tells the chronic tale
Half-life thirty days, so acute shifts make it pale
Prealbumin sharper, two-day turnover, reads the recent trend
Surgical risk climbs when your protein stores descend
Vitamins B12 and D, folate, iron in the mix
Post-gastrectomy deficiencies — anticipate and fix
Intrinsic factor gone when you resect the corpus wide
B12 injections lifelong, monitor and guide
Malnourishment predicts anastomotic breakdown, wound dehiscence clear
Optimise before the knife — nutritional prep is perioperative care
[Bridge]
H. pylori — breathe the urea, watch the carbon isotope rise
Stool antigen or serology — each test has compromise
Serology stays positive post-eradication, cannot confirm a cure
Urea breath test, stool antigen — these give you something pure
Fecal calprotectin, neutrophil protein spilling from inflamed mucosa
Differentiates organic from functional — IBD versus IBS — no closer
C. difficile, toxin A and B, PCR or enzyme immunoassay
Nucleic acid amplification — high sensitivity leads the way
[Chorus]
Wir prüfen die Marker, Schicht für Schicht
Chromogranin A im Blut — vergiss es nicht
5-HIAA im Urin, Karzinoid im Sicht
Wir messen, wir testen — das ist unsere Pflicht
Marker nach Marker, wir folgen der Spur
Laborwerte zeigen die klinische Natur