diff --git a/src/callbackManager.ts b/src/callbackManager.ts
index 954f962..8648870 100644
--- a/src/callbackManager.ts
+++ b/src/callbackManager.ts
@@ -52,7 +52,8 @@ export class CallbackManager {
   public runCallbacks(event: EventType, payload: CallbackPayload) {
     if (event === EventType.InitCompleted) this._sentInit = true;
     if (event === EventType.SdkLoaded) CallbackManager._sentSdkLoaded[this._productName] = true;
-    if (!this._sentInit && event !== EventType.SdkLoaded) return;
+    // if SDK has not been loaded yet, callbacks should not run
+    if (!CallbackManager._sentSdkLoaded[this._productName]) return;
 
     const enrichedPayload = {
       ...payload,
diff --git a/src/integrationTests/options.test.ts b/src/integrationTests/options.test.ts
index cae6261..25df4b0 100644
--- a/src/integrationTests/options.test.ts
+++ b/src/integrationTests/options.test.ts
@@ -1,7 +1,7 @@
 import { afterEach, beforeEach, describe, expect, jest, test } from '@jest/globals';
 
 import * as mocks from '../mocks';
-import { SdkOptions, sdkWindow, UID2 } from '../uid2Sdk';
+import { EventType, SdkOptions, sdkWindow, UID2 } from '../uid2Sdk';
 import { loadConfig, removeConfig } from '../configManager';
 import { ProductDetails } from '../product';
 
diff --git a/src/sdkBase.ts b/src/sdkBase.ts
index 2638e95..03b36f3 100644
--- a/src/sdkBase.ts
+++ b/src/sdkBase.ts
@@ -1,5 +1,5 @@
 import { version } from '../package.json';
-import { OptoutIdentity, Identity, isOptoutIdentity } from './Identity';
+import { OptoutIdentity, Identity, isOptoutIdentity, isValidIdentity } from './Identity';
 import { IdentityStatus, InitCallbackManager } from './initCallbacks';
 import { SdkOptions, isSDKOptionsOrThrow } from './sdkOptions';
 import { Logger, MakeLogger } from './sdk/logger';
@@ -163,9 +163,8 @@ export abstract class SdkBase {
 
   public getIdentity(): Identity | null {
     const identity = this._identity ?? this.getIdentityNoInit();
-    return identity && !this.temporarilyUnavailable(identity) && !isOptoutIdentity(identity)
-      ? identity
-      : null;
+    // if identity is valid (includes not opted out) and available, return it
+    return isValidIdentity(identity) && !this.temporarilyUnavailable(identity) ? identity : null;
   }
 
   // When the SDK has been initialized, this function should return the token
@@ -181,11 +180,23 @@ export abstract class SdkBase {
   }
 
   public isLoginRequired() {
+    const identity = this._identity ?? this.getIdentityNoInit();
+    // if identity temporarily unavailable, login is not required
+    if (this.temporarilyUnavailable(identity)) {
+      return false;
+    }
     return !this.isIdentityAvailable();
   }
 
   public isIdentityAvailable() {
-    return this.isIdentityValid() || this._apiClient?.hasActiveRequests();
+    const identity = this._identity ?? this.getIdentityNoInit();
+    // available if identity exists and has not expired or if there active requests
+    return (
+      (identity &&
+        !hasExpired(identity.refresh_expires) &&
+        !this.temporarilyUnavailable(identity)) ||
+      this._apiClient?.hasActiveRequests()
+    );
   }
 
   public hasOptedOut() {
@@ -230,10 +241,14 @@ export abstract class SdkBase {
         this._initCallbackManager?.addInitCallback(opts.callback);
       }
 
-      const useNewIdentity =
-        opts.identity &&
-        (!previousOpts.identity ||
-          opts.identity.identity_expires > previousOpts.identity.identity_expires);
+      let useNewIdentity;
+      if (!opts.identity) useNewIdentity = true;
+      else {
+        useNewIdentity =
+          !previousOpts.identity ||
+          opts.identity.identity_expires > previousOpts.identity.identity_expires;
+      }
+
       if (useNewIdentity || opts.callback) {
         let identity = useNewIdentity ? opts.identity : previousOpts.identity ?? null;
         if (identity) {
@@ -280,11 +295,6 @@ export abstract class SdkBase {
     if (this.hasOptedOut()) this._callbackManager.runCallbacks(EventType.OptoutReceived, {});
   }
 
-  private isIdentityValid() {
-    const identity = this._identity ?? this.getIdentityNoInit();
-    return identity && !hasExpired(identity.refresh_expires);
-  }
-
   private temporarilyUnavailable(identity: Identity | OptoutIdentity | null | undefined) {
     if (!identity && this._apiClient?.hasActiveRequests()) return true;
     // returns true if identity is expired but refreshable